Over the years I’ve accumulated the requisite drill starter kit, followed by circular saw, angle drill, impact driver, HID spotlight, and blower. On the 40V outdoor tools side I have a weedeater, leaf blower, and the first gen brushless lawnmower.
I’ve also found the One+ line to have great bang for the buck with decent performance and longevity to match. There are other makes that are arguably better - Makita, DeWalt, Milwaukee - or if you’re feeling exceptionally flush with cash, Hilti - but those seem geared for the professional crowd and less the home gamer crowd. I’ve done quite a bit with my set and save for the circular saw making occasional wonkey noises (likely a consequence of how hard it has to work, the crappy pack in blade, and possibly a little water intrusion) haven’t had any issues with the tools. The pack-in batteries have been pretty meh, as is the nature of small power tool batteries; grab a pair or two of the 4Ah or newer 6Ah whenever they’re on sale if you want to build a deck or do any serious/prolonged work - they’ll last longer per charge and last longer in general since you’re not beating up the chemistry as bad. I’ve got a pair of the pack-in batteries (one seems to still work), a pair of the nicer compact batteries (one is thoroughly dead), and six of the 4Ah batteries (all of which seem to be in great shape).
On the 40v outdoor tool side, the batteries have been a disappointment. The original 2.6Ah weedeater battery has held up great - still going strong. The pair of same-capacity batteries that came with the mower itself not so much so; one has died and the other will run for five to ten minutes before cutting out. The 40V blower purchase was as much for the 3Ah battery it included as it was the blower - that’s the mower battery now. Considering a rebuild of the dead battery, but that’s gonna cost a pretty penny while 5Ah batteries occasionally go on sale on their website. Have also seriously contemplated rigging something with two One+ batteries in series to see if the lawnmower will run off those or if the crappy 3rd pin DRM will kick in; I recall that the weedeater doesn’t have a third pin and perhaps the blower is also missing it.