BuyProxies.org Definitely gets my I fucked up and added a FB account to 2 proxies and so I asked if i could get it switched out. And within 4 minutes I got a message back with a new LA proxy. Pretty friggin decent.
Also been hosting 2 of my second teir accounts on 1 of there proxies for almost 2 months now. And facebook accounts aswell without a hitch.
However I have mixed feelings about BlazingSEOllc proxies... They're always super quick to replace. but they have been having alot of my proxies going up and down and a few needing to be fully replaced... This unrealiablity is scary for me to host my friggin clients on and i do regret it now. I will look to raise the accounts and find a buyer to offload the accounts to when they reach 10k and get rid of all the IP's from them (20) As I'd rather have expensive proxies that never fail... I have 5 accounts now because of them, but i've lost around 30 bought and made but never by ban, Always phone or proxy issues.
I give BlazingSEO a 1 for being alright. But im not sure if they deserve it.