#1
should i get the roland cube 20x or 30x? should i get the cube 30x because of the rectifier? the 20x already have "metal" and "metal stack"
#2
i'd say get the 30x or if you're really on a tight budget, the microcube. The 20x and 15x lack a lot of the features which are even on the microcube.
I like analogue Solid State amps that make no effort to be "tube-like", and I'm proud of it...

...A little too proud, to be honest.
#3
i have the 20x, and it has all i could ever need. i didnt need a low- gain distortion, which the 30x and the micro cube have and the 30w that the 30x has.
#4
I have the Roland Cube 60x and it's a great amp.
Gear

Fender Stratocaster in Red.

It's all I need.

The Anti-Anti-Ibanez Militia!