This is the amp I was looking for. Wanted something that was loud, compact, good value, good quality, with distortion that brings a smile to my face. It did all these. Played a Schecter Damien-6 through it, and sounds awesome. It's the best amp I could have gotten for the money. Almost went with the 20X but changed my mind after realizing only the 30X had the r-fier (mesa/boogie emulator) and I absolutely needed massive gain.

Sound
Sound is extremely good after some EQ adjustment to remove boominess on the bass. My favorite settings are "acoustic" and "r-fier." Acoustic is brighter, more compressed, and less twangy then the clean channel, makes for a great clean sound. R-fier is Pantera/Metallica style distortion ... smoothly heavy and articulate, does not sound muffled or tinny but rather beefy and well-distorted, allows easy and clear pinch harmonics and crunchy palm muting.

Features
This amp needs additional adjustment controls on the effects. Right now there are just two effects knobs with several settings on each, which does make for quickness and simplicity though at the price of customizability of the effect. All other features are great.

Ease of Use
Gotta give it to Roland, this amp is extremely easy to use. Only thing I looked up in the manual was how to use the chromatic version of the tuner. Involved holding the tuner button down for a full second, that's all. Everything… read more else is intuitive.

Quality
Oh yeah, this amp oozes quality. Totally solid, yet light-weight for its size and wattage. The pots are active not passive, so I won't be expecting any crackling ever.

Value
First of all, this thing is compact for a 30 Watt, and very loud too. Need earplugs for anything above half volume. So that with the good distortion makes for a great value. Like others said, best in its price range. Only thing that might come close is the similar Vox, but the Vox is quite a bit wider than the Cube and for me compactness was important.

Manufacturer Support
Haven't used it, but everything I've heard/read says Roland provides good support.

The Wow Factor
It will attract metal-babes. If you want the older gentler ladies, get a vintage Fender amp and wear dockers when you play.

Musical Background:
7 years amateur

Musical Style:
metal read less