Nothing personal but statements like this seem to be very very subjective and are likely to be very dependent on personal usage profiles. Pick almost any ROM and you'll find one or more people who will claim that it's the "best" for the G300. Just check out some of the many "which ROM should I use" threads. :-) I'm sure that there are plenty of others who will claim that one of the CM10 ROMs is the best JB for the G300.
Having said that there does seem to be some logic behind the general statement "a GB ROM is 'best' for the G300"...
I think what he meant to say is that this phone runs best under GB since ICS was never properly implemented on the G300 compared to other phones. By that angle, he's telling the true. What each person wants for themselves, it's a different subject all together.
OP, if i'ts that much a hassle to you, then no it's not worth it. JB has some neat features, the only one really worth mentioning to me is the better notification menu with some actions available from the get-go straight from it, like replying, deleting messages, mark as read, etc. But some ICS roms have that anyway. And the tiles look nicer than the standard power toggles. Other than that it's not much different, the clock app is redone quite nicely and it has a in-built timer now (something I'm mentioning because I actually need to use it and always had to install a third party app), and that's it. Not that much smoother than ICS really. I'd recommend wasting your time into finding what you're doing wrong in the installation process, it's really easy tbh, can't conceive what you're doing wrong.
Edited by kupp, 24 September 2013 - 05:43 PM.