I can say from experience that Anderson mfg. lowers look as nice as any parkerized lower I've seen. I haven't built mine yet, but I have no doubt it will go together fine. From what I've seen online they are a new mfg. making a decent budget gun going for a lower price point than the rest.
For a 7075 forged aluminum lower at $50 shipped, I'm happy with mine
Just make sure you research what you really want, if "mil-spec" is a goal you want to pursue, and build or buy accordingly.
Palmetto State Armory is often recommended as a good source of reasonable quality parts for very low prices, and you can build a bare bones rifle for under $500 and a decent rifle for under $600 these days.
