I own three laserbtb devices.
A HL532-100, this was my first laser and I love it. Well built,perfect size in the hand and appears to have decent heatsinking. For a DPSS laser the beam also exits the aperture relatively straight. I think as this was my first laser that came about as a result of a crapton of research I will always have a soft spot for it... but the fact is it's basically perfect and without flaw. Not LPMed, but doubt very much it's underspec.
A PL445-1600, monster brute of a laser, much bigger and heavier than it appears in pictures, makes the HL look like a drinking straw in comparison. One slight annoyance with it is when you turn the focus ring the beam actually moves slightly, as if something isn't straight. This is a very small cosmetic imperfection though and does not affect beam quality at all. I also love this laser to bits and can do genuinely useful things with it like lighting blown out candles in a teracotta plant pot heater, where the pot is way too hot to touch.
A LP650-80, bought on the back of the 445 order as more of an afterthought, nice unit apart from the fault mine has where it doesn't work properly unless the button has a fair bit of pressure applied to it. Also no plastic sleeve inside the laser to help prevent shorting batteries on the case.
All in all I'm pleased with what I've got from laserbtb and will no doubt buy from them in the future. I wouldn't mind a 635 from them in the HL host which are very affordable and possibly a diode green. Their lasers aren't always 100% perfect but for the hobbyist they are of substantial quality and have safety features, but based on cost and experience I'd probably not bother with the LP host and just stick to the HL and PL. Recommended.
