[RandallFlagg]

How are you defining “good?”
Price? Reliability? Resistance to abuse?. Accuracy?
Portability? Upgradability?

What you’re asking is on par with “what’s a good truck?”

I know...
Sad, ain't it?
What I want is something reliable and accurate that will last a good long time, but I don't want to pay extra for a brand name.

[RandallFlagg]

Well, the Glenlivet’s starting to hit me. So, I must get to bed.
I promise that I’ll reply to all when I get up and to work this evening.
Thank you all for your replies. You folks are the best.

Good day to you all.

[gundog]

...but I don't want to pay extra for a brand name.

Lewis Machine and tool makes Olympics uppers and lowers. Olympic's claim to fame was their barrels when they were SGW. Educate yourself on upper receiver roll marks...just Google it. A close investigation of gun porn will reveal that Remington and Rock River often use Cerro Forge uppers, and they can be had from J&T Distributing if you wanna do a Franken-gun.