I have only had it a few months, guys rave about them on cichlid forums dot com but I have also read some bad reviews on Amazon.
Same with eheim/ebo jager, they have alot of loyal fans of their heaters but if you read recent reviews it appears quality and customer service has gone down hill, every brand has duds it seems. I bought a aquaeon pro a week or so ago and it seems solid, knock on wood ;-)
Those guys you're buying your tank from have been in the biz a long time and seem like good guys to deal with.
I thought about buying one of their cube reef setups once a few years ago