Tr1umph, Follidrone 2.0, x-gels, and Test1fy are the 4 I'm debating right now. Will likely only take 2 and trying to narrow it down.
Tr1umph is pretty much a lock and I'm trying to debate on the other 3 as of now...
I've used all but Follidrone.
Tr1umph stacks with just about anything. Stacks especially well with X-Gels due to the LCLT and soy lecithin.
X-Gels a great supplement, one of the more proven natty single compound supps out there. However, with a history of "moderate to below average joints," I'd be careful with this one. I have yet to make it out of an ArA run without my joints feeling worse than normal. Some people have less issues than others, so you may end up being fine, but remember, progress without ArA will still be much better than progress with ArA + injury. If you stack it with a joint supp or fish oil or something to that effect, dose it as far away from the X-Gels as you can. You might also want to go with a low dose your first run (possibly 500-750mg instead of the 1000-1500+mg that people often use).
Test1fy is a cool supp, especially as a bulker, since I'd expect you to get an appetite increase from the anacyclus, and it keeps the gains fairly dry since it uses DHAA. Plus it has ashwagandha, which is a popular compound around here and has a host of benefits (hormone optimization, cortisol modulation, etc).
Weigh out pros and cons of each and make your choice based on that. All of the listed supplements are solid.