Slowly been building up my Dewalt Max 20V line up. Bought some on Black Friday, and Boxing day. Recip saw with 5AH battery, and hedge trimmers. My 18V drill, and impact driver is still going strong. But if it needed to be replaced, I would make sure it was a 1/2" chuck. When I need the 1/2" chuck, I use my corded one.
If I did a lot of indoor work, one of the first I would be getting are the LED tripod lights. No need to worry about the bulbs breaking, the heat, or too much power being used. Next on the list would be a 12 inch, double bevel, sliding compound mitre saw.