You will love the mini. I use my 1-3 times a week. As for a thermo, I use the Maverick ET-732. It works great, you just have to make sure to not pull on the probes by the wires, immerse the probes in the sink, or kink the lines on the probes and the ET-732 work great.
You can get the Maverick ET-732 from most places. I recommend http://bbqequipmentstore.com/NEW-Mav...732-ET-732.htm
The proprietor is 5-0BBQ (a fellow brethern) He runs a great shop, that ships fast and has great service. And if I'm not mistaken you can get a brethern discount with a discount code (I cant remember it off the top of my head)