I use a bosch red laser with plumb lines. Personally, I wouldn't get a laser that didn't have the plumb dots, way too useful if you do any stud work.
Laser strength is OK, annoying that the magnet attachment is separate, batteries last an OK amount of time.
Had it for about 5 years and use it daily. I would replace it in a heartbeat if it broke.
Interested to see what other people use.