I buy all my gun parts from midway USA. Fast shipping. They have hella parts, stocks, barrels, trigger groups, spring sets. As far as the best, it depends what you want to build, a target rifle with a thumb thru stock ( like mine, archangel deluxe target stock $99) , or an ar looking rifle, or whatever. As far as quality u get what u pay for.
Boyd's stocks What comes on them works fine for general use, hunting and plinking. Just use it as is. and see what others have do and go from there. Hogue has a nice overmolded stock that gives a good grip, is designed more like a normal rifle stocktoo and is lighter than orginal and can be bought for less than 60 bucks. Boyd's has maybe 5 stock designs that also just bolt in that will give different looks , Most cost under 100 dollars too.
In my opinion one of the nicest stocks I have ever seen
"It is when people forget God that tyrants forge their chains." Patrick Henery ... "The thing that separates the American Christian from every other person on earth is the fact that he would rather die on his feet, than live on his knees!" George Washington