This is my story:
I decide that cordless drills are useful, so abandon my portercable drill of 30 years service, and get:
-one 14.4V craftsman that I started with...battery died....two years old, so NO REPLACEMENT EXISTED...$100
So...I decided that these drills seem a bit cheap quality, so I'll just buy a cheap one.
-one 14.4V powerfist that has a shattered plastic gearbox...$30
Build part of a shed and it breaks....so off we go to get
-one 15.6V B&D firestorm, used, $30
Go through one years work and the batteries are almost failing (mind you I take good care of the batteries...but when boring through wood with spade bits or drilling metal...they die...very quick), so I'm thinking I need something with more power and I can't find any replacement batteries, so I go and get a new craftsman drill
-one 15.6V craftsman drill that has a much higher torque rating...$70
lasts a long time, but the batteries die, craftsman doesn't stock the replacements (1.5 years), so I get a:
-15.6V Dewalt Drill - $220
Thinking that the dewalt was going to be higher quality, I got this. Turns out that this one had a faulty gearbox, so took it back to the store for a full refund and bought this:
-18V Mastercraft drill, most powerful of the bunch bout $100
Batteries are on the verge of dying..but still isn't dead, no replacements available
Now since this can't handle harder jobs (like drilling two bigger wholes in a sheet of metal), I got the first ever 24V drill I saw...some
-Power XT 24V for $50...still working...but cheap piece of crap...chuck can't hold small bits...at all.
All in all, that's about $380 spent on cordless drills...ALL JUNK. Most of this was bought on my work grant as it is to be spent on tools, and my tech really likes these drills...but trust me they're a waste of time. I can't speak for the good quality dewalt drills, but for all they others, either they were crap, or the batteries didn't last long at all. I only paid $150 for the portercable drill, and it's lasted 30 years of hard work and runs like a dream...full metal (not a piece of plastic in sight), and fully bolted, so you can take it apart and clean/maintain. Buy a corded drill...
Peace