I have plenty of experience with these two cameras, and I own the GL2, but I would never buy another one. Have ahd to send it in for 400$+ service "repairs" multiple times and looks as if I will be doing it again shortly as the signs of hte "Remove the cassette" syndrome are reappearing.
If it were me I would look hard at a Sony Cam or if you have big bucks a HD cam of some sort.
Do a google search on the above syndrome, or go to dvinfo.net and take a look around at what some professionals are saying. I just know that I would personally never buy another Cannon product, based on the customer service I have recieved on a known factory defect that they have chosen to pass of on cunsumers as being normal wear and tear problems....BS!!
Well enough of the rant. Good luck with your purchase