I have a couple dozen Bridger 120s and a few 150s (I think, their single spring 5x5 that was offered free when you order $X worth of stuff). They both work, but double springs are not only stronger but stabilize in boxes just by bending the springs, easily. The 120s are stout and have very short springs and are a pain to set by hand when new. Also the safeties, flip opposite directions on the two springs, so there is no way to put them in a vertical box without one safety falling off as soon as you lift the trap up. They are what I would buy if buying more new marten traps though, the price is very good and they work well, just the couple non user-friendly drawbacks I mentioned. The jaws close tight and if you get a thumb (or both thumbs, speaking from experience) in them they hurt and are a pain to get out of. Personally I don't find completely closing jaws on bodygrips necessary or desireable, we aren't trying to trap cigarette papers! And if I have a nontarget stick its paw in a marten box I personally would rather have it pull out. But pretty much all your new traps are going to have magnum style jaws.
Only Victors I have used are either the old square jaws or a dozen 110s I bought as a teenager when they first came out with the eared jaws. Both work but the old square jawed 120s I have are fairly weak, not really that much stronger than the eared 110s. I've heard many people claim that 110s can cause fur damage on marten, I haven't ever seen this with my 110s but went to mostly 120s because they are easier to stabilize.
I have a few miscellaneous 120s, mostly older traps that I use, square jaw Victors, Dukes, Northwoods, one Belisle, and a couple I don't know the brand of. The Bridgers are stronger than all of them (maybe not stronger than the Belisle, but harder to set by hand), and cheaper to buy new than any of the others that are still available new.