$100 would be enough to get a Shutter and a YYO Musket, with a few bucks left over. Just saying, is all.
I would maintain that the Shutter actually deserves all the praise it’s received. And while the Musket doesn’t attract nearly as much attention, it’s an item I’ve been thinking of buying, myself.
There are many sub-$75 throws available these days, which play absolutely superbly and in many cases even look great. Any one of them, and a 100-pack of Fat Kitty string, would fall well within your budget, and give you all the “hardware” needed to handle even the highest levels of competition (or simply to enjoy yoyoing).
Seriously, we’re currently blessed with an embarrassment of excellent, affordable throws. You say you want stable? Heck, no problem with that requirement. You want long spinning? Please! These days, nearly any decent yoyo will spin - assuming you do your part - for what would just a few years ago have been deemed an insanely long time.