Anyone Roland Cube X(L) 20w amp?

[Ivob]

Hi, i'm thinking about buying this amp. I started to play in a band a little and need something for this purpose. My questions is:

if you guys think that 20W amp is sufficient for practicing with a band (including drums)

and if you have some experience with Roland cubes. I've checked some reviews of Cube X and XL amps and sound samples on YouTube and it comes to me that they are very solid machines. I don't need anything with a higher performance since i don't know if the band has some future... Yesterday we had a rehearsal, now i'm playing 15W marshall and it could keep with the drums without any problems, despite the volume wasn't more than on a half. Though i'm first of all acoustic guitar player i need the amp for an electric guitar