#3
the lower wattage ones are good practice amps. i wouldn't buy a 75 watt version but that is just me. Sorry slayerfrk...just imo.

TS are you shopping for an amp or just asking because you are curious?

we need to know some things if you want help finding an amp. If you want a simple answer to your question then don't listen to me because I've never played these amps.

total budget?
home use or jamming?
music styles/genres?
guitar and gear owned now?
new or used?
where do you live roughly?

good luck
#4
Its pretty much the same amp just louder. But no they dont get any better with more watts.