First, with regards to the Jupiter 9 - the big issue is condition and whether or not it is assembled correctly. Pristine examples from the 1959 to 1965 era often have helicoids that were cut wrong, which explains why they weren't used very much. Then there are the lenses which have had their helicoids regreased, but were incorrectly reassembled. Bottom line, the Jupiter 9 has Russian / Ukranian roulette issues.
I managed to obtain one of the former with a beautifully intact set of anti-reflective coatings. It's now mounted to a black Jupiter 9 base whose helicoids were cut correctly, but was an uncoated lens. I did have to recollimate the lens after rebuilding it. At f/4 and above it produces wonderful images.
The previous mentioned Industar 61 L/D has two positive attributes. It is the only LTM Soviet lens with aperture click stops and I've never seen a bad one. The I-61 L/D is solid performer, if the look it delivers suites your taste.
The Jupiter 8 is a very nice lens, which nearly always needs to have the helicoid and aperture ring relubed. Early J-8's do not rotate the front of the lens when focusing. The late black bodied J-8 do rotate the front part of the lens as you focus.
If you have a Jupiter 8 or any other Soviet lens that wobbles when mounted, it needs its helicoid regreased.
For my 50mm needs, the collapsible Industar 50 and the I-22 which also collapsible are perfect. The collapsible Industars are neither too sharp or too soft. - They produce a warm tone with color film that has just the right amount of contrast.
The I-61 L/D is as mentioned a bit harsh with regards to contrast. Another plus, to the collaspible Industars is their build quality. They have brass helicoids, which in my book is 10 times better than aluminum.