Ed is correct your Linn with a Rega arm is an excellent combination and as Ed says equal to or better than anything under a $1,000.
kevmaster, a used Rega P3 is an good choice easy to setup,trouble free and excellent sound. The LP12 (and I use one as my main table)requires an investment in time and energy to setup correctly and if it needs parts or you want to modify it,it can get very expensive quickly. On the other hand mine is over 30 years old and still functioning well with great sound. Have fun with your choice in either case.