The Xiaomi Mi headphones would work for this. In on-ear mode they definitely have more a fun and enjoyable sound signature. Lots of other decent options too but these are among the most fun that I've tried.
Noted about the Trinity Audio. Yes, the B3 Pro I should be among the best you can get for this. One other set I've recommended in this type of situation is the Etymotic EK5, which is rated at like 300 Ohms.
Not familiar with these. GR07 would have been my first choice also. My favorite alternative (Philips Fidelio S2) hasn't got very good isolation. The other sets I like in that price range don't really resemble the VSD3S too much in sound tuning but you could go for something way more neutral, like the Audio-Technica ATH-IM02. I've been enjoying these quite a lot lately and they isolate well. I don't have any non-VSonic alternatives to the VSD3S under $70, either. It's one...
Yeah, I wouldn't tag any of those three as particularly "smooth" and I don't think the Momentum is very balanced, either. The Brainwavz R3 recommended above is a very nice option, sounds almost like an RE-400 and has a rather heavy-duty build. If you really want to go indestructible with similar sound there's also the Aurisonics Rockets, but those are quite a bit pricier.
They're very different earphones, I don't think my review will be very helpful with this. I certainly wouldn't compare them head to head. If you want smooth and balanced, near-reference sound, get the Music One. If you want something colored and energetic, with a v-shaped sound signature, then the DUNU is better. That's much safer than getting a repair done..