Everyone that uses laser temp guns, where do you get them at a good price? Are some better than others? I've been looking at a couple on eBay. Open to recommendations for checking temps in my new rack.

http://www.ebay.com/itm/181125724753...84.m1423.l2649

http://www.ebay.com/itm/121027277304...84.m1423.l2649

http://www.ebay.com/itm/Non-Contact-...item1c29af52c9