Let's see I like some others have had them all. Snap on ct7850, ct8850, IR w7150, Milwaukee fuel, 3/8 snap on ct8810, Milwaukee fuel
IR good strong gun, continuous problems with anvil brake. First one got replaced under warranty because it was less than a year old. Second one developed the Same problem after 6 months or so of shop work. I just kind of gave up on that cause well it did still work power wise and I can't afford to have to warranty an impact and be without it every 6 months to a year. And soon enough my warranty would be out then what? Another con is there is no light. Not everyone cares about this but for home use I would say it's almost more important cause light at home garages or outside in driveway can be less than a shop most of the time.
Snap on guns. 8850 has a bit more power than the 7850 initially. Both have less than the IR or Fuel. These both have lights. The guns are good made to take a beating, have inexpensive boots available as well. The con is the price when new they are defiantly the most expensive guns. The 8850 like the 8810 seem to lose power after a couple months how much exactly I don't know but they do, I had more than one 8810 that after a couple months looses power. And if you grab a brand new one off the truck and compare them you notice it right away.
Milwaukee fuel. These are the top of the pile in my experience. The power is the top on both the 1/2 and the 3/8. They have lights on the guns the charger will also charge the m12 batteries. The warranty is simple imagine going online filling out a short form printing your fed ex label and not having to pay a cent, find an authorized repair center, etc. sure the turn around might be a couple weeks and it ***** when you need it today but I feel it's comparable to the others in turn around time. The true amount of tools you can get is great.
So yeah I have been there done that still have a snap on, an IR and the fuels. I use the fuels daily in a shop, the guy next to me uses one also daily we don't use our air impacts very often anymore
There are other contenders I don't own like the newer dewalt, yes I have th older one the 059 with the rocker switch and it was a joke. ac delco brands one that looks promising as well. kObalt had a high torque unit that peeked my interest for a while, Matco always has a contender out there too but there ar even more costly than snap on considering you get one battery.