we have a mini sprint here... love it and I'll echo Shane's comments on the gas and electric... $75-$100 a month running the dryer 8-10 hours per day. We ran a 2 shift month and we were up at $135 for that month.
only complaint is that even with 10' of heat, our chamber is too short to run maximum production on waterbase jobs (But that's not the fault of the dryer)
Not sure if they're making a mini-3000 yet or not, but the access panels in the 3000 really look nice.. to clean the mini and the 2000, you have to take the dryer apart...