QUOTE(gzsnow906 @ Dec 9 2009, 08:41 PM)

this is a 100% guess but i would GUESS that an xh-g1 is a pal version of the xh-a1. again complete guess cuz im too lazy to check. could be completely wrong.
no trevor the G1 has timecode sync out which is sick if you're shooting with a few of the same camera so that when you're editing in post you have all your camera angles lined up according to timecode... itd be incredibly helpful for our wedding film company (since we shoot with 2-3 A1s on a shoot). But for individual shooting its not necessary. Also the G1 has HD-SDI out so that you can capture via a Kona card into uncompressed HD 4:2:2 or whatever... also unnecessary for your shooting I would think.
I really really liked my Canon A1, I just hate that it was tape based... Also one of my major factors in switching to my current Canon 7D setup was because we had a Canon 5DmkII for our wedding film company and the image quality is just astronomically better than the A1 or the HVX either one when used in the proper situations. (it also has about 10000000000x better low light sensitivity with fast lenses than any camera for under $150,000)
The A1 shoots to HDV format at about 24-25mbps in 4:2:0 chroma sampling at a native resolution of 1440x1080 anamorphic pixels. The sensors natively shoot interlaced but offer vertical pixel shifting to acquire framerates of 23.976 and 29.97 in progressive modes. When edited and exported the 1440x1080 pixels stretches to 1920x1080 for full 1080p viewing... kind of fake 1080p but it still looks very very good on a Blu-Ray disc...
The HVX200 shoots at 1280x1080 for its full 1080p recording so it stretches even more than the A1... however it does natively shoot 720p in any framerate from 2-60fps... The biggest benefit to the HVX is obviously tapeless recording... but this requires storage space for dumping your cards after recording whereas tape is its own archival format. The HVX records DVCPRO HD format at up to 100mbps with 4:2:2 chroma sampling I believe so that color corrections can be made more in depth and you can chroma key (green screen) more easily.
I personally would buy an HVX any day over an A1 if you have the money and are working in proper conditions... but if you're buying new, I'd probably get an HPX170 instead just because its a bit cheaper and lighter than the heavy ass HVX.
One last thing I'd like to mention though... the A1's low light sensitivity is better than the HVX... so if lighting will be an issue, consider the A1 instead.