Research the market thoroughly
When considering a purchase of any expensive electronic equipment it is always a good idea to research the market thoroughly. There are many ways in which you can do this. You could try contacting your local retailer to discuss your requirements but there is always the worry of the retailer perhaps not, understandably, having a particularly un-biased view on which products are best suited to your needs. Therefore exploring the field is important so you know roughly what the specifications of each piece of equipment actually mean.
A very good way of researching your purchase is to read reviews and general information on each product. It may take time for you to build up enough knowledge to feel confident making decisions about your purchase, but it will be worth it in the end. This is especially true when considering the amount of money involved, even at the lower end of the market where even the most basic projectors may cost anything from $2000 upwards. That's not to mention the top end where the prices can top $125,000!
There are many publications in print at the moment that are specifically aimed at people who are enthusiastic about image projection and all that's is inherent to that area of expertise. More often than not these magazines are tailored to help people who are passionate about home cinema. Among these are the following:
Widescreen Review (www.widescreenreview.com)
The Home Theater Magazine (www.hometheatermag.com)
The Perfect Vision (www.theperfectvision.com)
These magazines not only provide up to date information on the latest developments in projectors but they also give valuable advice concerning all aspects of home cinema including projection, sound and projector screens. You can access a lot of information from their respective websites where they often archive earlier articles, reviews, FAQ's and other valuable information. You can also sometimes contact experts concerning any specific question you may have.
In many cases it might also be worth doing some research in the manufacturers own websites and comparing information, especially price, with other sources. You can never have done enough research if you're intending on spending what is a large amount of money on a projector!