An added comfort thing for a jazz bass is also the tapered neck.
Honestly, I'd rather pick up the Dano 63 than a Squier, including the Classic Vibes and Vintage Modified series of Squiers. I have a Dano Longhorn RI and its a great bass. I don't use it too often because its strung piccolo, but its extremely fun to play, and very light. It also looks cool as all hell!
The 63 Dano is pretty fun to play as well. They used to be $300 and now they're under $200. It'd be a crime not to get one. I thought they were a great deal at $300 and played better than some basses costing nearly twice as much back then.
As for getting the value pack, save your money. You get a cheap bass, a cheaper amp, and a cheap strap, some picks, etc. Maybe a tuner which will probably be one of the few useful things in there. Its better to buy a bass and then get a used amp on Craigslist or off of a friend.
Personally I wouldn't get the Classic Vibe or Vintage Modified basses. Every time I played one of these I was left unimpressed, although the 50s CV I played did sound pretty close to the real thing. The other two CVs I played sounded bland and uninteresting. This wasn't the out of the box set up mind you, most of the stores local to me to a set up before putting something on the floor.
The Vintage Modified basses I played weren't that great. Admittedly the only one I really want to buy is the Telecaster Bass with the mudbucker, and only as a darkstar project. The VM P-basses are atrocious and every one I played was terrible. I wasn't too big a fan of the VM Jazz (fretted) either. I think maple is a poor choice of body wood because it gets damaged easily.
With all that mudslinging at Squier, this is my experience with them, although I know people love them. I currently own one Squier and its a great bass. I recently just traded another one away.
I think the true champion of the Squier line is the fretless Jazz they offer. Its a great bass. Unfortunately, I don't think the OP is looking for a fretless.
/flamesuit