^ Bizarre, I've made a lot of Jazzmasters and bought several Fenders and I like 'em specifically because they're so light. I have severe back and leg problems, so I can't cope with heavy guitars at all — even my chambered Les Pauls and Telecasters are just gathering dust now — but Jazzmasters have never been an issue for me.
Eh, maybe I just got lucky, or y'all just got unlucky.
Anyhoo, saw this thread and just thought I'd throw in there that I've also got a few solid maple guitars and, like the Jazzmasters, I can't say I find the weight to be that much of an issue. The two most comparable guitars I have are a Kramer Jersey Star which is a super-Strat with a maple neck & body, non-recessed Floyd and three humbuckers, and a Charvel So... somethingorother, which is a 'super-Tele' with a maple neck, alder body, non-recessed Floyd and two humbuckers. Of the two, the Charvel is considerably heavier, while the Kramer actually isn't any heavier than the average Fender Standard Stratocaster.
Maple bodies sure aren't the lightest bodies out there, but I think the weight is overstated. The sheer mass of wood of some body styles is really what gives them weight; you can make a Les Paul out of the lightest basswood and ash you can find, but it's still a huge chunk of wood. Meanwhile a Strat or super-Strat is always going to be comparatively light.
Tone-wise, I can't say I notice an overall EQ difference but maple-bodied guitars do tend to let the higher end (and thinner strings) ring for longer. Makes sense; a dense wood is going to retain those frequencies more while less dense and/or less solid bodies are going to bleed off the treble quicker.
Prince's main guitars were all maple-bodied (including the Telecaster which so many replicas use ash for) and the vast majority of neck-through guitars use maple as the neck/center wood, so they wind up with the same tone. If you're ever in doubt about maple's tone for bodies, just listen to anyone using a neck-through guitar, or get funky with The Purple One.