I'm currently happy with the combination I have - which is:
12v Dewalt Combo of drill and impact
18v combo of Makita impact and drill
CXS set - which I may still sell. I simply don't find it any better than the Dewalt.
There are just a few times when my Dewalt isn't powerful enough, but the big dog Makita is too heavy.
A sub compact Makita is probably all that I need to bridge the gap, but you know we always like higher tech and I could be tempted by something else...........