I’ve never heard the volts so cannot comment on them (although I’ve never heard a single owner that doesn’t love them). I’m running c34e’s for Atmos speakers, and DIYSG speakers for everything else (1099’s, htm-6’s, and htm-8’s). The c34e’s are the last speakers I haven’t replaced with diy options - yet. I’ll relay a few observations. The c34e’s sound great. I have them in two rooms and they have no business costing as little as they do for how good they sound. They’re also an easy in-ceiling fit, as they don’t require boxes, are only 4.25” deep, and are designed to be in-ceiling (cut the holes, insert the speaker, tighten the clamps, and cover with grill). However, while they do manage to work great in my 4000 cubic foot theater room, they are not very efficient. Audyssey sets my 1099’s at -5 to -8 while the RSL’s get set to +5 or more. I’m not sure if it’s a function of their 88db sensitivity or the little 4.5” woofers but they’re much harder to drive than anything else in my system. If I were starting from scratch I’d probably go volt just because of the quality of components, the rave reviews, and my positive experience with 7 other diysg builds. I’d love to hear from anyone who has actually heard both In Atmos duty that offer an a/b comparison!
I just reread your question. If your asking which would give you the “most output” it would have to be the volts 10’s. They’re 95db sensitivity vs 88db, a big 10” woofer cone vs 2 4.5’s, and a power range of 450 watts vs 150.