Was in the tool store the other day browsing. Looked at the 3/4 drive impacts, what confused me was the differnce between the IR 2145 and a IR 261, the 2145 being cheaper by 50-60 bucks. As far as I know the IR 2145 is stronger, w/ 1350ftlbs and the 261 has less @ 1200ftlbs and is also much bulkier and heavier. Why does it cost more?