Fullum, you're exactly right about many of the set-ups at GC. I actually like our local one, the staff....it is what it is, but gee-zuz, man, I've seen some basses that never should've been put on the wall.....broken strings, strings an inch off of the fretboard, dents, scratches, pots that won't turn....I've told them on more than one occasion, what the heck is that bass doing on the wall? So yeah, just have to be aware of that when trying them oiut.
Right? And it's like, we're not just complaining because the bass is poorly set up and it makes it hard for us to play. If they're set up properly, the basses will play and sound better, and
they'll sell more basses. Kinda baffling on the one hand. How do you expect people to want to buy your instruments if they all play like and sound like garbage because they're poorly set up? And on the other hand, understanding how they're run at a corporate level like a big-box-store for musical instruments, it makes perfect sense that they can't be bothered to try.
It's just frustrating because for some people it really is the only place to try musical instruments, and they might even have to travel for quite a few dozen miles to get there. And you want to encourage new players to just go try as many instruments as possible. But, what good is trying all those instruments if they're poorly set up? It's like if you went to test-drive cars but they dealers only let you test the lemons that got brought back and their mechanics couldn't fix. "Here's the keys! By the way, the ABS doesn't work, it pulls severely to the left, the accelerator sticks, and the stereo will randomly turn on full volume! You're gonna love it!"
I just think back to how many times someone told me "Well i'm just learning and i'm not very good." So i pick up their bass and the neck is bent and the strings are an inch high, all slightly different heights and i'm like, "well this isn't helping you get any better." Give their bass a quick set-up... not even a particularly great setup. Just get the relief close enough, and the string heigh decent, and the pickup height decent, and all of a sudden they're like, "Wow! This is so much easier to play! I thought it was just me who sucked! This is the way it was at the store so i thought this is how it's supposed to be!" You'd think, right? But no. Proper set up and all of a sudden the bass works with you, not against you.
When you have a fair amount of experience, you can probably play a bass with a bad setup, and can still get an idea of what it would be like to play if it was properly set up. We have enough experience to kinda see past it if we had to. But a new player who's just learning the instrument? How are they gonna tell the difference between a bass with rubbish action vs a bass with great action that just needs to be set up properly? Does it sound weak because the strings are too far away from the pickups or because the pickups sound flaccid? Can something be done about the frets scratching my fingers?
Even inexpensive basses can cost a few hundred dollars. For that much money you'd think that a thing you buy would come in good working order, without needing a professional overhaul before use.
{puts soapbox back in the closed for now}
Anywhoooo... to bring this back to the OP, @JimmyAZ if you find yourself at GC trying basses, hopefully they're at least halfway decently set up. And keep in mind the bass's neck relief (forward/back bow), string height, intonation, and pickup height can all be properly adjusted. (Do beware that if you're buying used from GC, someone might have already broken the truss rod, preventing neck adjustments. GC may or may not bother to check if the truss rod works, again, depending on how good the techs are at your particular GC.) And i noticed you were "warned against" Squier. Squier is Fender's "budget" line, but by no means are they poorly made. Maybe 30 years ago the cheapest Squiers were no-frills basses to be avoided, but these days their quality and playability overlaps with a lot of Fender lines, with a few minor design differences and component differences. It'll come down to preference with how they feel and sound to you.
Really, even the more budget friendly brands these days, after a proper setup, will do the job well. But if you're at GC, any of the brands they carry new will be solid (after proper setup).
Edited because just saw OP got a bass on order: CONGRATS!