[TurboFool]

Personally, yes, I think it was worth it. Despite having typical bugginess of a beta ROM, I haven't been able to switch back to, say, MightyROM 4.16 because I don't want to walk away from the 6.5 stuff. I love the new Today screen (some people don't), finding it notably preferable to TouchFLO3D (both versions), and the finger-scrolling is 10X better. There are minor other things, and I'm about to flash to a newer one which has other improvements.

That said, it is a personal preference. If you like an ultra-stable phone, stick to a 6.1 build for now. 6.5 is surprisingly stable, almost Windows 7-level of surprising for a pre-release, but it still has minor issues that the released versions don't. Also don't switch if you're not up for flashing every few days. I used to do that back in the Titan days, and I got used to it, so it's not that big a deal. You'd be surprised how quickly you get used to bare essentials and figure out how infrequently you use certain apps which you can always just install when you need them. Or you use something like Sushimi to auto-configure your favorite settings for you.

Anyway, I give it a thumbs-up and don't want to go back. Your mileage may vary.