I am a Smartboard licensed installer and have been for 5+ years now and other than certain Government Official companies who insist on using the Smart products due to extensive software testing and approval I'm finding that I'm removing more Smartboard based products and replacing with the newer all in one interactive Epson 595wi's /1430 wi Projectors which by purchasing with a wifi dongle gives you wireless Laptop connectivity with the advantage of dual finger touch so no special pens required.
I have also fitted several C-Touch and Clevertouch systems the latter being the better screen at this moment. The company I work for purchases the Clevertouch from Sahara so not limited to a single UK based company as mentioned above.
The only Smartboard based product that work well are the expensive Smartboard Go-Wire which still require a touchscreen of sorts to use with your PC/Laptops but there is no license issues and will work without any software installation as its built in to the cable!.
Just my 2 penneth worth!.