Red for me, sounds a bit more open and smoother in the palm mutes...it also has gain set a bit higher then the orange sample I think
Tried the JVM410 a while back with a Marshall 1960 and a Mesa OS, and it sounded very cool (all channels, also really nice clean and crunch sounds!), but there were very prominent high mids that I couldn't
get out of the tone with tweaking the knobs...was quite annoying after a while
But it's one hell of a beast, especially considering the price! I allready recommended it to a friend who wanted to get his first tube head
edit: but yeah, NOISY AS FUCK.
even worse then the 5150