My specialty is golf simulators & swing analyzers. I have had years of experience and have done tonnes of research.
There are multiple systems out there with several different technologies. The three best systems (in each price category) are the Dancin' Dogg at $450 CDN (for basic portable use, no real simulation), the P3ProSwing at $1,250 CDN (my personal favorite as it is the best bang for the buck), and the GolfTek System at about $40,000 CDN (for luxury homes and major commercial installs) - oh yeah, there is also a GolfTek home practice center version that costs about $15,000 CDN.
The Dancin' Dogg features an turf covered infrared sensor pad with basic swing analytics and a course with overhead only view. It interfaces with Tiger Woods and is good for a gaming / basic system. A computer is required and you can add stance mats and nets/impact screens. You can use any club in your bag, but sole tape is required on the bottom of your woods & putter. The unit must be used indoors and in a light-controlled area. The turf is nice, but it needs to be replaced if used too much. You only need enough room to swing a club and you can take this anywhere.
The P3ProSwing features an extremely durable sensor pad with 65 infrared sensors with 12-point swing analytics, a driving range, putting green, full 18-hole golf course and a Tiger Woods interface. The system is 99.9% accurate, is a PGA Learning Center Technology Partner, and is backed by a 100% satisfaction guarantee. The basic system can be setup and taken down within minutes and is really easy to operate. The graphics are great and can really make you feel like you are on the course. This system can be used with your computer and your projector to give you the full simulation. You can add stance mats, nets/impact screens, games, video capture, launch angle, and more. You can use any club in your bag, but sole tape is required on the bottom of your woods & putter. The unit must be used indoors and in a light-controlled area. The surface of the pad looks fragile, but is incredibly durable - I have abused mine for over 2 years and it still looks like new. You only need enough room to swing a club and you can take this anywhere.
The GolfTek system is very similar to the About Golf and Full Swing Systems, just at a better price. GolfTek was the first company to develop golf simulators and they have perfected the technology. This system has multiple sensors and requires a large area along with overhead lights. The system is extremely accurate, has all the analytics you can imagine, and includes 12 courses based on real courses. The graphics are so real that you may never want to go out again, ok, maybe not that great, but you get the idea. There are over 50 courses in total available as well as extra features such as video capture. The analytics are intense and can be used for instruction, clubfitting or just self improvement. The requirements of the system make it only suitable for permanent installs, but if you are serious, there is no other system that compares to it.
I am the Canadian Reseller for all three of these systems and I have full stats on almost every feature of almost every system out there, so if you want to know more, just visit my website at www.par2pro.com, email or phone me.
My goal is to match the right system with each golfer... even if I don't sell my own systems :)
Take care & keep your eye on the ball!