I've got both the M18 Fuel and M12 Fuel drills / impacts. (well perhaps all 4, not both?) Anyway, I have to say that for most things around the house, I go for the M12s. I've had zero problems with power and battery life is fantastic. I've even attached a drillbrush to my drill to scrub the shower and tubs and it works like a champ. Don't get me wrong, the M18s are really, really nice. However I just don't usually need the extra runtime and power for most of what I do around the house. I recently hung a 28" extension ladder from my portico roof joists, which required building a bracket mount point out of triple stacked PT 2x's assembled with 4" lags. My M12 impact (2453) drove every one of them without a hitch. Since there was drilling and screwing, I carried both the drill and the impact driver on my belt for the project and I have to say, it weighed a whole lot less than if I would have had to carry my M18s. If you were carrying them all day at work, the M18s would certainly be worth the weight, but for home projects the M12s are quite nice. You really can't go wrong with either, but for the money, the FUEL combo with an extra battery is under your budget and will give you a lot of bang for the buck. As far as bits go - I bought quite a few of the Impact bit sets during the EOY sales and they've worked out fine. I do like the Milwaukee bit holder better than the Dewalt ones that I used to have - better magnets. I've got a set of the FlexTorque ones, but I haven't had the need to break them out just yet.