You can buy a nice pre64 M70 in a std caliber for well under $2K. I have a 1954 M70 06 on GB right now I'd let go for $1300.
Whatever you choose learn as much as you can about them and buy original and in good condition.
I have several interests ranging from Pre64's to custom rifles (these will never appreciate in value like a good M70 but I like them) to Parker shotguns and recently some English shot guns. You will never lose money on a quality firearm in good original condition.
