The Strat tone has something to do with the wood. Changing to a guitar with Mahogany neck and body will make a noticeable difference. Change in scale length has some effect as well. However the single biggest factor is the pickups. IMO your Strat has vintage quack because Fishman designed the pickups to sound like that. If you put pickups that have hotter tone (more mids) you will lose most of the quack. Putting rail pickups like a set of Dimarzio Cruisers you will lose a lot of quack, unless you mount them at an extra low height. It depends if you want a guitar that sounds *exactly* like a Gibson, or you just want a guitar that has playability like a strat, with tone that it significantly warmer and much less quack. To me it seems that you probably want a Strat and simply change the pickups. It could make more sense to try a new pickguard on your current Strat before spending money on a new guitar.