When things come to proxies go with private proxies. Some link list providers even have mentioned which proxies to use and i would suggest you to go with them if you are using a link list. That way you can get max out of the link list. raybyte , buyproxies are currently i am subbed on. I am using ser verified lists , serlinks for higher tiers and for KS (kitchen sink) i use both of them plus gsalinklist. There is nothing special or important to use specific link list seller for tier 1 as all of them i mentioned support higher tiers. No matter what link you chooses always make sure to uncheck platforms like indexers , track backs and explolits.