Dell's tech support used to be the best but I guess because they've gotten so big, it's fallen off considerably. If you do need assistance, you'll almost always be talking to a man or woman from India or Panama, struggling to speak English in an intelligible manner. In my experience, the problems always get solved but it can be very frustrating. I don't know if it's better anywhere else.
The coupons are a good idea, and the Online Dell Specials change very frequently...sometimes day to day. Keep checking. In addition to free shipping, you can get some really good deals.