A Life-Time review of the EZ Kut hand drill (the tools life not mine)-
Durability - lasted me about 5-6 seasons before the body of the drill failed. Failed point was the bolt hole for the drill bit, the hole started to get bigger with use allowing the bolt to move around more and this year the body bent, due partly to that, at the hole while prepping a maple this season. If I babied it it would have probably lasted a few more climbs but it was doomed to fail and I wasn't going to let that be on a hunt so, last night I got a piece of 1in scrap tubing with a thicker wall to replace it. Even though it will be a little heavier it should last much longer, I also made the drill body about an inch longer than the original for more leverage. The larger tubing also leaves room to plasti-dip the body and still have room to fold up and unfold the bit without the opening becoming too narrow. The only item other than the body I couldn't use was the bolt for the drill bit as I had to replace it with a longer one for the wider thicker tube. At 60 bucks I originally thought it was a overpriced but since it lasted so long it's about 10 bucks a season and everything but the body was salvageable and the bit itself is still in great shape. However, 60 bucks still seemed like a lot to replace it especially after making a replacement over the course of a few cold ones, in the end its 2 bolts, a bit, handle and cut metal tube. For that price they should come silenced with plastic washers and dipped or wrapped.
Weight and Packability - The best especially if you get those carbon fiber bolts newly discovered. The only other climbing option that gets close in this category is spurs or rope climbing and they aren't as easy to throw in any small pocket.
Use - Defiantly not the fastest method at the tree if a new set up, but if you inculde how much quicker you can more through the woods and still be quite and not getting sticks caught on brush or clanging metal walking in it probably evens out. On pre-drilled trees, you can climb as fast as you can find your holes. It defiantly requires work and you may sweat, but for me here in NC I'll be sweating anyway until mid or late Oct so that part isnt an issue for me. And of course it isn't legal in every location so that is a consideration.