I'll second Mill Creek Painters. Had them do my condo downtown and they finished ahead of schedule. No complaints at all.

That part about the cutter walking on you is the real lesson. It's not just about the tool breaking, it's about the damage a bad one does to your work. A cheap tool can turn a simple cut into a costly fix real fast. My rule is to buy the cheap version first, and if I use it enough to break it, then I buy the good one. For something like a tube cutter where a mistake is expensive, you skip straight to the good stuff.

Man, I used to think people complaining about this stuff were just missing something obvious. But @elizabeth900 is totally right, it's like detective work with broken clues. That one tiny, messed up thing can ruin your whole day because AutoCAD just freezes instead of giving a clear error. Finding a problem like an orphaned style feels like a stupid victory, you're happy it's over but mad it happened. It really changed my mind on how fragile the whole system can be.