Christos Kalantzis - Senior DBA/System Administrator, YouSendIt.com
I have used MySQL Enterprise Monitor for a year and a half, and although some believe its a superior product, its 5K per server per year for the Enterprise version. I just started using MONyog a month ago, and purchased it today.
I bought the Unlimited Pack for $999 and that is a perpetual license for an unlimited amount of servers. It gives me all the monitoring I need and without an agent installed on the MySQL server. That makes the sys-admins I work with very happy.
My prefered feature is the log analyzer. It makes analysing the slow-query-log and the general-log really easy and efficient.
Cool product, check it out if you can.

Shlomo Priymak - Database Administrator, Delver Inc.
I was already using SQLyog Community edition for a while, and thus got to see how good Webyog's support was. This is one of the major facts that made me feel safe with investing in both MONyog and SQLyog Enterprise - those products are constantly evolving, and the developers listen closely to the customers. I personally asked for some features or changes that found their way into the product extremely fast - on some occasions in less than a week!
MONyog basically just gave me exactly what I needed. Checking on the current and past state of the servers became a no-brainer. When someone asks me about a high load on a certain day - I can answer in minutes what was the condition of database at that moment. With the new Disk Info tool, finding out where your space is wasted is as easy as it gets.
No need to use sets of custom scripts and hack all kinds of small solutions together - MONyog does it all for you, the moment you install it.

David Goadby - Senior Partner, Pixel-Plus
Over the years we have tried many products some were free and some were
much more expensive.
Out of the bunch SQLyog Enterprise is the only one that offers us everything
we want in just the one mouse click.
Each release gets better too as the developers keep up with the new
features in MySQL - much appreciated guys!
SQLyog Enterprise is in use all day every day; its icon is in Quick Launch Bar.
It is the first tool I reach for whether it is a simple query,
a new view or a complete backup.
For me SQLyog Enterprise is the Swiss Army Knife of database managers.

Mark Cloyd - Owner / Programmer, Mark Cloyd Designs
Dancing with joy... still. I have been using SQLyog Enterprise for some time now and
am convinced that it is simply the best MySQL management tool ever.
I have tried many different tools over the years, including those from the
MySQL website; I am really in to Open Source, but every once in a while a
product/program really stands out and is worth buying. Nothing touches
SQLyog Enterprise for easy, comprehensive power and usability.
When I first downloaded SQLyog, I was a little apprehensive, but excited to
see what it could do - well, after about an hour of poking around, I was
literally dancing around the room, my wife thought I was NUTS; it had
immediately solved many issues I had with different projects quickly and
easily. I have a couple of web-based applications that use in-house database
systems, to get that data on the web without complicated programming is now
a breeze with the Database Synchronization Wizard. Just a short set-up
process and the use of the integrated SQLyog Job Agent, data stored in a
separate system is easily updated to the web via the supplied Tunneling
Script for public use whenever updates are needed; it's awesome!
I recently had a rather large project that I converted from SQL to MySQL and
the Migration Tool Kit made the job a breeze, instead of spending hours
fretting over data types, complicated drivers and filters, and the sheer
size of the SQL database I was converting, I was immediately able to resume
work optimizing queries by quickly adding Indexes and viewing results in the
Query Analyzer; I didn't miss a step, my client was impressed and I was the
hero... being the hero is always a good thing.
Scheduled back-ups are a slam dunk too! I don't ever have to worry about
keeping backups current with regard to my clients databases, they now take
care of themselves, I am completely prepared for any loss of data that may
occur as a result of server issues; if for some reason a table is acting a
little buggy, the Table Diagnostics make identification and repair easy and
fast. Need a quick report of data within a table or from a specified query to
display for your client? SQLyog Enterprise makes exporting into either .CSV,.HTML,.XML
or .SQL files fast so you can display or send your data to your client
without delay. That works in reverse as well, if a client sends you data in
any of those formats, importing is just as easy and you no longer need to
spend time with complicated scripts to import data.
I could go on, but suffice it to say that SQLyog Enterprise has saved me time and money
and has taken a lot of thought and worry out of database management.

