When I shoot jpeg (Canon) I tend to use [S] standard for general shooting, [L] for landscapes, and [P] for portraiture. And, as an aside to all of you who keep insisting on Raw, especially those who say Raw "all the time, every time," jpeg has its very important place. One very quick example -when shooting one grandson's soccer game in the morning, and another grandson's baseball game in the afternoon, and the family get together for pizza and ice cream that evening I am not going to be spending time post processing images - click - print - go. Or, for the screen generation, click - upload - go.
I back up all of my photos on two external hard drives and make DVDs, that gives me three backups. I also have all my current computer hard drive files backed up using Carbonite. Carbonite has saved me twice, once from a virus that contaminated my files and once when my computer hard drive failed.
Although I may raise some hackles, I think I can say, with confidence, that there are no bad cameras on the market, and if you are thinking of switching from Canon you have a lot of choices. The old, very old, Canon-Nikon debate is mostly a lot of heat with very little illumination. With that being said, if you have four good Canon lenses and want to minimize your cash outlay it would seem that staying with Canon would be your best choice.
I shoot both. I use jpeg when shooting family photos at holiday time, vacations, birthdays, etc. Folks just want them posted or a 4x6 print. I do not want to waste a lot of time in post processing for this type of photo. I use raw when I want to be able to use post processing to "get it right."