Razako said:
What fun is a laser that can never leave your room and needs 120V AC to work? It's worth it for CO2 lasers and argons, but portable greens are usually a lot more fun than labs unless you need 100% duty cycle for a lasershow or something.
Have you ever owned a quality lab greenie - especially the type with a separate head/PSU (so you can still maintain a relatively small and movable beam emitter)? Its pretty awesome! I gotta say, just a personal preference, but I'd disagree with you about portables. Even if I wanna show off, unless I wanna run around in the streets shooting my laser everywhere waiting for the cops to come, I find I'm near enough a wall outlet. Being able to put the laser down and experience a high quality beam, without having to worry about the laser rolling around, or dropping off in power after 60 seconds (and lets be real, as awesome as RPL and Prometheus lasers are, you can rarely expect to maintain full output more than a minute at a time), etc. is a real plus to me.
That said, I'm talking about a QUALITY lab laser - the type of laser that costs more than an RPL 200 anyway. I've sold a few of those lasers that dave sells at lasershowparts. They're like DX lasers - cheap as hell, but if you're looking for something nice and reliable, you've gotta be kidding yourself. A good lab laser will beat the beam specs of an RPL, but those Aijii units aren't that impressive. The semi-DIY style PSU does not give you the sense of security a good lab laser would, and the module's sub-par build quality and thirst for heatsinking leave a bit to be desired.
In the end, its a toss up for me and would heavily depend on what I want to use it for. The lab laser is cheaper, but its pretty sad when many portable lasers have better build quality than your labby. A 200mW RPL wouldn't be entirely convenient either, and brings a whole host of cons, but in any case its an awesome portable laser. It'd definitely be a tough choice for me!
All the criticisms said, if you decide on a 200mW from Dave instead of the 200mW portable, give me a PM. I may have a lightly used one in one of my setups that isn't being used anymore that I could sell off for a bit of a discount.