Aircat 1055th- 2.8lbs, 4.2" long, 89 db, 9,000 rpm and $114 shipped ebay. 500 ft lbs
Nesco NP742 - 3.4lbs, 4.5" long, 90 db, 10,000 rpm, about $140 shipped eBay. 500 ft lb
M7 NC-4232Q - 2.9lbs, 4-13/16" long, 83 db, 10,000 rpm, $158 shipped eBay. 550 ft lbs
M7 NC-4630Q - 3.3lbs, 3-13/16" long, 85 db, 9,000 rpm. $135 shipped eBay. 450 ft lbs.
Astro 1822 Nano - 3 lbs, 3-7/8" long, 86 db, 10,000 rpm, about $100 shipped. 450 ft lbs
Proto/Mac - 2.9lbs, 4-13/32" long, ? db, 10,000 rpm free speed and $230 for Proto shipped eBay. Mac is $300 on website. Both boast 635 break away torque
Matco MT2760 - 2.2lbs, 4.27" long, 89.7 db, 10,000 rpm. $300 Matco.com 600 ft lbs.
Klutch 48091 - 3.4lbs, 4-3/4" long, 94 db, 10,000 rpm, $100 Northern Tool 500 ft lbs.
OEM Mighty 24403 - 3.5lbs, 5-1/4" long, ? db, 11,000 rpm, $140 shipped eBay 450 ft lbs.
Cornwell CAT4112 - 3lbs, 4.4" long, 95 db 9,000 rpm, $250 Cornwell.com 525 ft lbs.
Chicago Pneu CP7732 - 2.9 lbs, 4.4" long, 95 db, 9,000 rpm, $116 shipped eBay 450 ft lbs
Astro 1822 Nano - Out of 20 ratings 4 were less than 3 stars.
Aircat 1055 th has 9 total ratings, one 4 star and the rest 5 star.
These numbers were taken off the brand's websites and prices may vary depending where you look. I just did this as a quick comparison. I'm still rooting for the Aircat, but the Mighty Sevens look good too. Need more feedback on them.