A correct length titan shoots very well in an 80, the short stiff spring does a great job on the big ol piston imo

I prefer V Mach springs generally, but do have a perfectly well set up 80 with a titan and it shoots superb.

Titan are a very very good spring, if not quite the very best, or as refined as V Mach who do their best to produce an exact spec spring matched to model/calibre