I personally like Reni the best.
Then again my opinion is completely based on the fact that it's the only server I've ever played on and all my friends are here. (Well most of them, Cerb left me)
Long story short, don't listen to me because I'm like a nationalist. Mine is best and everyone else sucks for no reason other than this is where I was born.
I'm sure all the servers have wonderful people that are willing to help newer players. This community as a whole has a lot of decent players but every community has some bad apples and a few lunatics wearing bunny heads (Don't listen to those guys)
P.S. Zid please fix the grammar in your signature. It's killing me!