Hello everyone. I need some advice on my current equipment and whether or not it is valuable enough to stick with Canon. Here is my current setup: I have an old Canon EOS Rebel X (35mm) that I've used a bunch over the years, no issues with it. I'm looking towards getting a DSLR but don't know whether or not my equipment is compatible (and hence whether or not I should stick with Canon in order to keep using it). If anyone is interested at seeing what they look like: www.proelium.org/pics/EOS_Rebel/ Canon EOS Rebel X Body (pics 1-2) Canon 35-80mm f4.0-5.6 lens (pics 2-3) Canon Speedlite 244T (pics 4-7) Can I use this lens on an EOS 350D or 20D or will it have issues (I don't know much about mounts)? Can I use the flash on those cameras as well? The flash works fine but (as you can see in the pictures) it only has a mode for ISO 100 and one for ISO 400. What happens if I try to use it with a different sensitivity (like say flash set to ISO 100/400 and taking a pic at ISO 200? Is it still useable or does it mess up shots? If you guys think that the flash isn't worth all that much (since it's inflexible) and that the lens won't do so great on a new Canon DSLR, then I can begin considering other systems (like the Nikon D50 or Pentax *ist DL). My budget for a new sytem is $700 or less. Any advice on what you would do in my situation (even if it's to pawn off the stuff for something newer) is appreciated! Thanks for the help.