For me, the main reason I shoot full frame is to get the wider angle for landscape shots. A 17mm lens is truly 17mm.
This also means I feel more comfortable hand-holding slower shutter speeds in low-light situations: if 50mm is really 50mm, then I will step closer to a subject to frame the shot and feel comfortable (carefully!) shooting between 1/30th and 1/50th; if 50mm is actually 80mm (on a 1.6x sensor), then I will not step closer to a subject to frame the exact same composition, but only feel comfortable using a shutter speed somewhere between 1/50th and 1/80th. (If your subject is moving, then this has no merit at all, seeing it doesn’t take into account subject blur.)
What you really want is the camera that has the least amount of noise at high ISOs. Usually, this will be the full frame camera, but it’s not always the case. You can only tell by looking at side-by-side comparison shots.
If you’re shooting action, you’ll really want the 10fps (just be prepared to sort through/delete many, many more pictures than normal….ie. fast computer).