GEVI is better if you know a co-stars name, as you said. It also sometimes has photos from the scenes (especially for multi-scene videos), which iafd does not. And both are incomplete (run by volunteers). GEVI seems to add recent releases more quickly, at least lately.

iafd has straight porn also; GEVI is gay only.

With IAFD, whilst "Check Scene Pairings" is sometimes empty, when there are people there you can see images of all of them simply by scrolling down, which I find far easier than jumping from page to page, and all of the scenes each has been in with the performer you're looking at are in a single place.

Of course, I've found that often neither site is complete, and checking both can yield results that checking one only might not. Which one I check first tends to be driven by what I know. For instance, GEVI seems much better at listing older scenes.

Edit: I've just realised, in this case you're right. One place GEVI scores over IAFD is that it does include scene partners in the initial list, making it easy to see if a scene is one-on-one, a threesome, etc., and given we know (a) it's Armond Rizzo and (b) a group of men in a hotel room, this would indeed be the better place to start.

Could it be "Kinky Little Cocksucker"? https://gayeroticvideoindex.com/episode/134220

It's likely not complete, and nothing jumped out as being a potential match when I just did a quick check. but there are 207 appearances listed there. You can sort that list by year, and if you might recognise a face or two of those who appeared with him, the "Check Scene Pairings" feature might help might jog your memory.