Zero. I have three or four Tamas and the only one of them I can find is broken. The only VPets I'm spending time with right now are my WowWee Alive pets.
I have my v3 (Graffiti design), my broken v4 (Graffiti design), and a duck pet commonly known on eBay as "Donald", but no relation to the Disney character.
Hopefully I'll win this v4.5 (Graffiti design) so I can run only graffiti tamas. :]
Normally I have two running. But I only have a Familitchi running. I haven't ran that specific tama in a while... The date on it is Feb 14th.... Given I have multiples of the Fami... I guess thats okay. Intermixed with all my others... I guess it makes sense.
I don't get what's great about V2 and Angelgotchi and all old versions. Yes I do have an Angelgotchi and plenty of my cousins (mostly teens/young adults) had the V2 when it was around. They tell me it was SOOOO sucky! Once one came over to my home and I was using my TMGC+C. They said "Is that Tamagotchi? I used to have one, a version two, and all you did was feed it and play with it. And now they have them in colour OMG!!"
Anyway, I'm running my V4.5 and V6. I love the skill points and school idea