Looking for reliable backconnect/ rotating proxies

I am in the lookout for a reliable provider of backconnect/ rotating proxies (US)

The proxies would be used for scraping directories like YP and YELP and not for scraping Google or facebook.

Have tried a couple of providers but am having intermittent connectivity issues with their proxies and so I am in the lookout for a new provider

Anyone got any suggestions. I won't be using these proxies on multi-threaded applications


Thanks

I would like to know also this, I dont understand really dont understand why this is such problem why nobody make business seems crazy shortage nobody can offer reliable service!!! Nobody!!! Really nobody wnats to make money??? If no I will setup here is my logic hide my ass have a lot of servers for measly 2.99USD month I had superfast scraping solution years ago now problem is that hidemyass rotate ip from same country but problem is that seems google need fresh ip from different subnet back in the days it was working but now they got smarter. If hidemyass allowed rotate random ip from totally different country then would be ready scraping solution at measly 3 usd month. Here is my question its already possible why nobody can offer service with say 1000 different servers each server have dynamic IP which change every x minutes that way would have tons of unique ips every x minutes.

Residential ip proxy network is just the tool for scraping!
Now a lots of Residential proxies are offer unrestricted threads, So never worry about blocked anymore