Vpns are a horrible idea, how would you run multiple accounts thru different ips on 1 device?
and most of them will get you locked anyways
The only proxy you would use is socks 5
really it depends, I usually do 3-5 f2p accounts per proxy and 1-2 members account per proxy (probably over-kill)
proxies do not reduce bans (in most cases) but prevent chain bans from banning your whole farm in one strike
Although I am sad to say this, not many people are willing to share their proxy provider for obvious reasons.