How is the reliability on these guys?

I'm thinking of going down to the states to buy one since it's significantly cheaper than buying locally. The only downside to this is if the amp breaks, i'm going to have a hard time getting warranty work, etc..

On the other hand, a Vox AD50VT seems to be priced very nicely compared to the states, but that thing is huge!
i know people that have had blues cubes for years and never had any problems, everything i know about roland suggests that they have great reliability.
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