How different are AR lower parts kits and what's the best one?

[cookie]

2008 I bought a cmmg stripped lower at a great price to build into a dedicated 22lr Ar.I picked up a DPMS parts kit and it started having trouble in about 4 years of use .They warranted the parts and sent me a new trigger and hammer. 3 years later I started having the same problem. I bought a Palmetto State premium lower parts kit[ it is different that a DPMS ] so far the PSA parts are still like new. Parts aren't parts.

 

[nativeo]

Does that mean that someone here wants to sell me 2 SOLGW lpks? Thanks guys you're all awesome.........