I bought three of these juggling balls to help me learn how to juggle. They worked! Nice tactile feel to them would recommend and will buy more as my skills improve.

Amazing balls!
They are very comfortable, very easy to catch and doesn't roll at all.
They have minimal bounce when they hit each other while in the air, and allow you to continue juggle with ease.
I can easily fit 6 balls in one hand and throw them one by one with good accuracy.
They are great fun and it is hard to stop juggle with them.
Cons:
The fabric is water and dust magnet.
They are noisy - you can hear every catch and drop.
They have only 5 colours, and the white one doesn't match well with the others (The yellow, green, blue and red are "soft & warm" colours, and the white is a big contrast to them)
BUT I LOVE THEM.
They are the best ones that I tried to date.
Planning on buying some more :)

These balls are excellent. They melt into your hand which is great for numbers and multiplexing. The underfill means they don't go anywhere which I found useful for learning 5 as you can let them hit the floor and see which way your throws are wonky. Plus it means collisions are easily recoverable. The material won't last forever but you'll get a good 6 months out of them juggling everyday, and you can easily stitch them up as I have. Best suited for indoor use as dirt can be a problem. Overall highly recommended, you won't find anything easier to catch!

I love juggling these!! These have to be my favourite balls i've juggled. Juggling 9 of them has never been easier. From juggling 8+ these are the balls you need. Uglies!!

I really like these balls. As already mentioned, they feel and fly wonderful. The one problem is consistency. The weight is very consistent, they're all roughly 95 grams I think, but the size of the panels and the tightness of the stitching is poorly controlled and some feel much tighter than others. It doesn't affect juggling them very much but it is quite annoying.