I have over the years purchased a number of drilling tools. The one's I use most are the manual pin vice type with a ball handle. They seem to fit my hand nicely and are convenient for when just a couple or 10 holes are required.
I found that the corded Foredom, with a foot speed control is the best, most durable electric tool. I use a teeny 3 jaw chuck with a 1/8" stem in it. Top notch for cutting and grinding.
The cordless dremel with a mini 3 jaw chuck works well too. This one is the #8050, has 5 speeds, 5000 to 28000 rpm. A bit fast for drilling, but manageable. I broke the plastic internal part that locks the spindle during tool changes so I have to fiddle with it now. I think this was discontinued and replaces with a better design. $100.00 plus dollars.
That said, I found a couple other tools, both inexpensive, at Harbor Freight.
The red one is a bit bulky, but has two speeds, 5000 and 10,000 rpm, with a low speed - off - high speed switch. takes 4 AA batteries, but it works pretty well where the work is fairly easy to get at.
The gray one is actually a small power screwdriver. Runs on 2 AAA batteries at a somewhat over 100 rpm, the switch is a forward and reverse but you have to hold it in the forward or reverse position to make it run. I hold it with my thumb on the switch and my first two fingers gripping it in the light grey area, kinda like a pencil. I installed a mini 3 jaw chuck on it as well. Comes with an assortment of small driver bits. This one is a bit slow drilling but easier on the fingers and much easier to control. I use this one quite a bit.