OK I messed with the MS-50G a bit more last night.
Here what I think so far .....
The amp/cab models are lame for bass IMHO ... no big surprise it is for guitar after all.
The dirt/overdrive stuff is OK but not great. Definitely effects the low end ... some more than others ... if you add EQ to the patch & use a wet/dry blend (LS-2) it's def usable though.
The RAT simulation sounds "RATTY' enough until you turn on a real RAT (or good RAT clone like I have) then its like ... not on the same planet! .... No surprise again
All the reverbs & delays sound good & having the Para EQ available to add to the patch lets you tweak to perfection.
The Chorus/Flanger/Phaser models are all good as well ... they effect the low end a little but not much & the EQ is always available.
The Octave tracks surprisingly well on bass very OC-2ish. ( nmodded OC-2) Not as good as a Micro POG though. (but what is)
The pitch shift stuff is weakest thing on the MS-50G IMHO.
It tracks well enough but just sounds a little too wonky to my ears.
Would prob be fine live in the mix with drums to tune up or down a 1/2 step ..... def no latency issues detected.
Haven't checked the compressor models or filter type effects yet.
My overall impression is the MS-50G is worth ever penny for the reverbs & delays alone
Every bit as high quality as a Boss GT-10 better with somethings IMHO.
I still plan to do a tube vid with my setup ... maybe tonight if I get home in time.