There is NO Best and inexpensive air rifle. A good quality air rifle is going to cost you money. A cheap air rifle will reflect it quality by how poorly it performs.
THESE WERE FAIRLY POOR QUALITY GUNS,$75 AT BEST
Pre- 64
It is often said that the S&W M&P15 is one of the best quality builds. However, I built my own from a stripped lower and parts. I consider my own build to be very reliable and high quality.
Best to ask a gunsmith for assistance.
One of the best is a Feinwerkbau Westinger & Altenburger. Biathlon Air Rifle Model P700 Aluminum. Average cost $2,480. It's an Olympic Match Rifle.
HP makes a very good scanner model. EPSON is good to and high quality ink.
There is many variables that will effect the price of a winchester model 70.First is it a pre-64 model 70 rifle,or is it a post 64 model 70 rifle?What kind of condition is the rifle in?Is the wood and metal in good condition or is it worn?The best way to answer your question is to know the serial number so that your rifle can be dated and have you describe in good detail the condition the rifle is in.
Best to ask a gunsmith for help.
Best left to a qualified gunsmith.
The company that makes the best quality remote control airplane parts would probably be www.rc.com they have the biggest and best quality selection of RC airplane parts.
CMMG's "bargain bin" rifles.