Best dual-purpose projector: PT-AX200U?

Well, you've got lots of options. The AX200 is a nice, bright projector, but does have some history of problems (search on this site for some threads). However, pretty much every projector out there has some sort of problem associated with it, so it's like anything else in this world that you buy. It'll handle blu-ray and SD-DVDs just fine.

As far as portable screens go, I used the Epson Duet screen for awhile in my family room, and it's a very portable system. It's about 80" diagonal, and instead of collapsing vertically to produce a long tube, it collapses horizontally, and the stand attaches to the case making it easy (but kind of heavy) to carry. It's primary problem is some sag in the middle of the top of the screen, but depending on how picky you are, it's not a huge problem. They're pretty reasonably-priced, too.

Blu-ray players depend heavily on if you want a standalone player, like a regular DVD player, or you can handle having a "game" player, (i.e. the Playstation 3) in your system. I have 2 PS3's primarily for blu-ray in my 5.1 family room setup, and my 7.1 basement theater. It decodes all advanced codecs internally and passes them to an HDMI-equipped receiver, but is unable to bitstream the codecs to a newer receiver to be decoded. It's also 2.0 compliant, due to another recent firmware update, and is only one of very few players that is. Additionally, it upscales standard DVDs very well, and is fast to load and use. Also, it plays games and works as a network media server if you have MP3s/photos/videos on your computer that you want to have access to. Negatives are that it's a relative energy hog vs. standalones, uses bluetooth for remote control (vs. IR, however there are some third-party solutions for using your regular universal remote with it), and is an odd shape for integration into a rack. If you want/need a standalone, the Panasonic BD30, while difficult to find, is comparatively priced with the PS3 (which is one of the cheapest ways to get into blu-ray). If you can wait, and afford a little more, the Panasonic BD50 looks very promising. Pioneer, Denon, and Sony all have some decent standalone units, as well.

Yeah, I think business projectors might be a little more sturdy. I think the other big differences between HT and business projectors are brightness (lumens), which would be better with business projectors, input connection types (but I think the AX200 accepts VGA as well as multiple computer resolutions, but make sure), and resolution.

My suggestion as far as the projector goes would be to call one of the AVS sponsors that sells projectors (projectorpeople, visual apex, AVS science store) and tell them how you're wanting to use the projector. I've had contact with all three regarding different issues, and they were all very knowledgeable and willing to help. They don't want to sell you a projector that isn't right for your needs.

I would look at the benq 830 and optoma HD71.

Another thing to keep in mind is that LCD projectors (especially those with smoothscreen technology) can be less sharp when displaying computer screens. Depending on what type of information you are presenting in your business presentations the AX200 may not be as good as a standard business projector which are quite frequently DLP since they are smaller and lighter. While viewing movies, the smoothscreen feature lessens screendoor effects and is a positive but it is not a positive in displaying text.

I plan on getting the AX200 for my home theatre so my advise is based what I have read and not firsthand.