Which are the best laser grips for a round butt N Frame?

There seem to be at least two models: LG-207 and LG-314.

What's the difference?

Which is smaller as I have small/medium sized hands?

Are there other models?

I think the difference is that the 314's have the rubber overmold and the 207s are hard plastic, I've only seen/held the 314's as a guy I shoot with put them on his 325 nightguard, they're full sized target grips not good for carry IMO but he likes them.