Firmware above 5.00 M33-6 with fewest glitches?must have features?

[Dunpeal1978]

I have a TA-082 PHAT with 5.00 M33-6 installed. I know GEN D3 has the disadvantage of not having a 1.5 kernel,and there is Eboot Exchange 2.8 to decrypt new games.But is it worth losing the 1.5 kernel? I am concerned about the following criteria:

1) Has the least instances of crashing,and remains stable throughout most common tasks

2) Has features that make it worth upgrading

3) Highest compatibility with older plugins,and homebrew programs