What camera are you going to use it on? I have a lot of FSU rangefinders (FEDs and Zorkis) with LTM lenses and have found that the lenses are (usually!) extremely good and the prices are pretty easy on the bank account. Common ones are 35mm Jupiter 12, 85 mm Jupiter 9 and Jupiter 11 135 mm. There is also a 28mm Orion (another FSU LTM lens) that is a bit more costly and is hard to find.
Be careful, the Jupiter 12 lens (35mm) may not work on the Leica CL or M-5 with the LTM/M adapter as the rear lens element will hit the meter cell/arm. Same with the Cosina/Voightlanders. The collapsible Elmars & copies also have the same problem. Look for the coated lenses, of course.
Good luck!!
Bob