I'm looking for a tripod for my Canon Pro1 and there are so many...how do I determine what is good and what is junk? I've been to Bestbuy, Fry's Electronics, and CompUSA....I have also looked online at butterflyphoto and beachcameras and there are so many. Ambico looks like a popular one. Samsonsite makes some as well as Sony. Any help is appreciated.