Good KOTH servers?

Morning all (or evening depending where you are)

I just bought reforger a couple days ago and please pardon the pun, but I am having an absolute blast in KOTH. I have about 750 hrs in arma 3 so this feels like a natural evolution.

So far the server I have played in has been great but infrantry focused e.g. no heavy armed vehicles, rocket/turret helicopters, no MBTs etc. Are there servers with these included and if so, what would you recommend?

I assume your rank doesn't "transfer" from one server to the next?