I'm currently looking into the canon speedlites and their third party equivalents. As this will be my first external flash, I would not mind some advice . I currently have little knowledge about the merits of the various models, or in fact what I should be looking for in the first place. Are there any sites out there with such info? Visited the Strobists site, and while an excellent source of general lighting info, it seems lacking in the specifics I need for this decision. So, anyone out there have some excess knowledge that they wouldn't mind bestowing upon one such as I?