I think I have used every power tool brand and usually go with Makita due to the consistency, durability, great batteries and a vast range of power tools on offer. (even coffee makers and microwaves haha!)

They are are a little more expensive though so maybe not a good choice for you.?

Ryobi is probably your best bet as it is an affordable option for DIY. I have used Ryobi in a professional setting as well and the only drawback is the battery life isn’t great so more batteries are required to keep going on jobs. (if you are worried about the lawnmower, I would suggest a good petrol power Honda or Victa anyway.)

Also check out Metabo (formerly Hitachi) they are priced competitively, durable and have a flexi volt system in which you can run them corded or on just batteries. I own a couple of their drills and they have served me well.

Hope that helps.