First and foremost: Be very cautious on wireless. Wireless video is typically a joke, it rarely works well, and often doesn't work at all. The systems that do work really well, and there are some that do, cost about five to ten times what your budget is - not kidding.
Run a $5 cable to your computer and you get perfect results every time, try to use wireless and you may find yourself wasting hundreds of dollars of billable time to have an image that looks poor.
Your laptops do NOT have wireless video transmitters magically built into them, and while something like an iOS device may have some connectivity, it will be limited. You will have to download programs and drivers to make any wireless product work to display and it will use network resources to establish the wireless connection which should be considered against the backdrop of any corporate network environment. It also will be proprietary software which will be used and is entirely under the control of the manufacturer as to any compatibility issues will be dealt with.
There are wireless aftermarket products which you can look at and consider which connect to the projector that may fulfill your desire for wireless video presentation, but they will be proprietary as there is no standard wireless video interface that exists.
Now, all that said, I would recommend the brightest widescreen projector that fits your budget. Widescreen because we don't live in 1999 anymore, and HDMI for the same reason.
I put together a search for you...http://www.projectorcentral.com/projectors.cfm?g=1&hide=0&st=1&mfg=&p=0&p=700&w=&r=&br=2500&br=10000&ll=<g=&t=&db=&dt=&c=&ar=Wide+%2816%3A9-10%29&dvi=13&wr=&pjl=&pjw=&pjh=&td=&i=d&is=&sort=brt&sz=15
I took the budget up to $700 just to capture some which are right over $600 and then sorted the list by brightness. A requirement for widescreen and at least 2,500 lumens.
I think I would take that Vivitek right at the top of the list. It is just a few bucks over budget, but very close, it is bright enough to handle 80" to 120" in almost any room with a solid image. The resolution is excellent for PC presentations and it comes with a good 3-year warranty.
That is a good projector for the money, if you want anything non-projector related, then buy it as an accessory after the fact.
If you really want to try that wireless feature, then go with the Epson 1262W, also on the list I provided.http://www.projectorcentral.com/Epson-PowerLite_1262W.htm
Epson is a good company, and I don't want you to feel like I'm slamming you, but I have yet to see wireless work with the smooth quality that you see in an iOS type product ever. The video always is diminished and it can be very distracting from presentations. I did recently see a good wireless setup that was something like $10,000 or so (really pricey!). It used USB dongles to connect directly to a receiver which then connected to the projector. So, wired to the projector, but wireless from the laptop.
As I said, if you have your heart set on the wireless, then going with Epson is a good choice, but do get the widescreen model. You give up about 15%+ of the brightness of the Vivitek, but that shouldn't matter a great deal.
[Edited by AV_Integrated on Sep 25, 2013 at 9:20 AM]
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