I'm very happy with my recently purchased Milwaukee 18V stuff. I did quite a bit of comparison shopping first.
IIRC, the real HD 1/2 and 3/8 stuff is different batteries. M28 and M18 respectively. Big jump in price.
I have M18 stuff (impact, drill, circular saw) and my contractor friends are pretty impressed when they use them. Amazing battery life. Useful battery meter on each battery. Miles above my old 12V and 14V stuff from a few years ago.
I figure when it's time to break out the 1/2 drill it's time to get a cord. The old school Milwaukee 0234-6 Magnum can't be beat.
Whatever you decide on, shop around for the combo deals. I saved a TON.
The warranty was a little better than the Makita and my drill/impact combo came with a nice case instead of a bag.
Some may never live, but the crazy never die. -HST BOTOC Power!