Sounds like you got a bad batch. I used mine this week to build a annex to my shed. No issues what so ever, sds did great in the bricks / concrete. Drill driver made nice pilot holes and the impact driver (not in this set) had no issue throwing in 6x130 screws. If you have the right impact (the more expensive brushless one) it’s slowly accelerates to stop the risk of rounding out the screw head. I got rid of my 18v in favour of these as they are so much lighter, nice and easy to work with and batteries last ages if you have the 4ah.
I had the 18v hoover and it was crap.
Pattern 5ah batteries are about £35 & have had no issues in 2yrs
These will do DIY for sure. I'm an electrician & use the 10.8 impact driver (£37ish bare) as my go to. Brilliant bits of kit
I have the 18v version. Don't bother trying to lift anything more than a few crumbs, it's pretty pathetic, even with new filters. As for the drills, no, again they are like cheese, get some decent ones.