Pros: None

Cons: Can't use non Keurig brand k-cups.

Overall Review: I've had the Keurig B50 since 2002 or 2003. No issues what so ever and never had to descale (probably because I always used filtered water). Only issue is it is VERY loud when it sucks water from the refillable tank to the internal tank. Decided to get a new machine. The new 2.0 version (bought at Cxstco during Nov 2014) only takes Keurig brand k-kups (they used special ink & the 2.0 machine has a sensor that reads it). Just for that reason, 2.0 goes back to Cxstco. Now I have the Cuisinart SS-700.