I've played the whole range of basses and guitars over the years and yes, there is something faszinating with vintage basses and guitars. most of them feel more smooth and more comfortable, even if this might only be a placebo effect. but new instrumens can provide the same.
but regarding more lows on strats and teles, yes they are there - with the good ones. it seems that played good vintage instruments provide a more smooth, more even and tonally extended sound with better harmonics through all the registers to my ears, but this is nothing a very good new guitar won't do if you play it a lot...
I personally don't need a vintage instrument to play or sound better. since I never had a typical sound in mind but still am in search for MY sound. vintage guitars don't help me there, but maybe they will do for others.