My questions are, do I have plugin freedom with bukkit etc.? As in, can I install specific versions of craftbukkit + all the plugins I want?
Yes, you have just about complete freedom when it comes to your plugins..etc.
Your best bet to find a review would be to check out reviews forum;viewforum.php?f=3
Our Minecraft performance is pretty topnotch and hard to beat. We go a little more in depth about the performance here;https://www.nfoservers.com/minecraft-ga ... entals.php
We have several MC customers which frequent the forums, so if you are looking for a customers personal experience one of them should reply.