I haven't been on this site in ages and have recently gotten back into the tama phase that permeated my existence when I was much younger. So, a few years ago, I bought the tama iD, but now there are a billion versions of these colorful egg-shaped, crystal encrusted, princess-like infused versions of my iD (like the P's and iD L's, etc), but I don't know the difference between any of them. In fact, how many are there? Are they worth buying? What makes them special or better than the previous version? What do you think?