I tend to agree with nikkubus banana spiders are very attractive but you'll probably be looking at a decent price tag for a female banana. I would personally stay away from the bel because you won't know what is in it with all those Genetics. You may end up with a bel and not want to pair it with another spider because it may have spider. Although lesser pastel spiders are gorgeous.
Off the top of my head I personally might look for something like a pastel or super pastel or pastel enchi. All of those will be relatively inexpensive and that would give you a nice mix of attractive combos and single gene animals. Heck you could probably pick up several of those that are hatchlings for 300 bucks or less.
Also from my experience the wobble varies doesn't matter what Genetics are in them. My lesser pastel spider has the worst corkscrew out of all 8 of my spiders. At least in my experience it's random. Also keep in mind that just because there is wobble doesn't mean that they don't have a quality life. Sometimes it's just a lil harder to feed the ones that are really bad.
(Please no comments from spider haters, everyone has their own opinions and am just trying to help the op understand the morph from my personal experience)