I must say I never thought to ask initially either, I was just so delighted at getting a pump at all! But 5 years on I'd probably be more inclined to do a bit more research on features, support etc. Support is an important point however - it's often useful to have a DSN who knows your pump almost as well as you do, and if you go for a pump they're not trained in the use of, that might be a disadvantage. I think the two popular brands currently are Medtronic (Paradigm Veo) and Roche (Accu-Chek Spirit), these are both offered by my PCT, but obviously there are several others around too.