Hello Arthur,
I have been using BETI for nearly a year now. I use it on my 10" Dob with Treo 680 and HP iPaq running Astromist. I quite like my setup as there are no wires and Astromist is easy to use. Here is a link to one of my posts:
http://www.iceinspace.com.au/forum/s...ad.php?t=34885
Do you have any particular question?
Best Regards,
J.