Dice Player, I generally find it's hardware acceleration is better than MX Player (often MX Players software decoding is better than Dice though).
While I haven't used any players on this phone yet (since I don't have it, thanks VZW!), I have played with many different ones my Toshiba Excite tablet. Here's my experience:
Diceplayer
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Pros: best interface IMO, excellent hardware acceleration, good SMB support
Cons: no DTS support anymore, and even when it had DTS support, it had issues. It also seems to be abandoned by the developer, as he no longer responds to emails or support requests in the Google groups board. Because of this, I don't recommend buying it.
MXplayer
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Pros: good interface, good software acceleration (except on Tegra3 devices)
Cons: poor hardware acceleration support, unstable SW acceleration on Tegra3 devices for some reason (even they don't seem to know why), no DTS support anymore either. That said, the devoloper seems very responsive in the Google groups board, so that is a good sign. They also say they are working on their own custom HW acceleration framework, so their HW acceleration should improve greatly in the future.
BSplayer
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Pros: excellent hardware acceleration, DTS support, good SMB support, good SW acceleration
Cons: the video screen UI isn't as good as Diceplayer or MXplayer, and seek swipe gesture doesn't work as well as Diceplayer. Neither are a deal-breaker though IMO
All the rest I tried aren't really worth mentioning. They either had showstopping bugs, abysmal interface and/or lack of proper hardware acceleration.
At any rate, BSplayer is my current player of choice. If they improved the video screen UI and swipe gestures, it could easily be the best out there. Most importantly, it is the best when it comes to handling many different types of videos, both with HW and SW acceleration.
