As for sweets, definitely a good starting kendama to learn lighthouses, birds, things of that nature. The paint on an aTack just continues to become more tacky as time (and play) goes by. Not a bad product at all.
My Ozora is all natural, which makes it JKA "recommended", not "Approved". The balance is great and once it's broken in it feels fantastic. However, I wish I would have waited and bought one with the white paint.
A friend once told me...."Buy all kendama you can get your hands on." There are so many different brands, styles, feels, paints, etc. It's up to your personal feel.
Have fun and I hope I helped out!