I've only recently started shooting in RAW and have been using the standard Canon software (Digital Photo Professional) for all my editing. I'm quite happy with some of the results I've achieved, but it seems that all the post processing advice in magazines and forums like this relates to the Adobe Photoshop software. It is apparent this software seems to be the industry standard for post processing, but having checked the price on Adobe's website I've decided it's a bit above my budget for the time being!
My question is this - is the functionality you get with Photoshop worth spending several hundred dollars on when compared to what you can do in DPP?
I also notice there seems to be a few different versions of Photoshop (lightroom and elements) - how do these differ from the main Photoshop software, and are either of these worth spending some money on when considering the benefits of them in comparison to DPP?