It really depends on what you want lol.
I would go with a pinstripe myself for two reasons.
1. Spider morphs are super super common, and are even starting to end up on pet store shelves. I'm amusing you want something a bit more unique and frankly everyone has a spider.
2. Spiders are prone to have a wobble, which really isn't a detriment to them but it can cause some disorientation and missed strikes if your feeding live. With that said, there is nothing wrong with the spider morph, and the wobble doesn't stop it from doing all the normal things that any other ball python can do, it's just something to be aware of.
Ultimately you have to chose something that speaks to you. But Pinstripes are just as cool IMO and make some pretty neat morphs.
Goodluck!
Chris.
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Mike, why do you always have to be the first to respond? hahaha