Best Pilates balls for home workouts?

Need some advice here. Which size should I grab, and what kind of workouts actually work? Dick's Sporting Goods has the 75cm and 65cm versions. Maybe someone can point me toward a good YouTube channel or a site for this.
Thanks

Would you mind sharing your height? It would really help me determine the correct size for you...

1,65

Sophia Brooks3 said:5'5"

In that case, there really isn't much of a dilemma—it’s definitely going to be the smaller one...
It looks like you're in quite a rush to pick up a new set, too. Since it's already mid-February... you'll be shopping well ahead of my schedule. 🙂

Haha, yeah, I’m definitely not the fastest person alive. But I see they have a 22-inch option now. I guess I can't decide if I should go with the 22 or the 26.
Thanks

Maybe you should just ask Mr. Houdek to lend you whatever he’s got left in his stomach

Start with the smallest size possible. Honestly, given how much they cost, getting a smaller one is a smart move. You should definitely go for it. I actually messed up when I first bought mine because I went too big, thinking I could just under-inflate it a bit... but yeah...
For beginners, the standard advice is usually to stick with a smaller ball. It’s just way easier to manage. Also, keep in mind that the size you choose really depends on what kind of exercises you're planning to do. But even then, the rule of thumb stays the same: smaller is always easier. Once you start to get the hang of things, you'll figure it out.

Thanks Tea, but which one would be better for sitting?

Maybe this might help a bit...
http://www.gymnic.com/mascheraeng.html