>>8699853All of the 2000s era tamas ("Tamagotchi Connection" branded) have breeding, but they don't do genetic mixing. You still raise premade characters based on care quality. The color models did this up until the 4U+, but those are well after the cutesy phase so I'll ignore those
If you can handle some extra gameplay features that weren't on the P1/P2s, the V4 or 4.5 is probably the peak of the "classic" tamagotchis of the mid 00s
V1 is the simplest, so is the most "classic" in the sense that it's mostly just an update of the 90s ones
V2 has more characters, and introduces money that you can buy items with (food to eat and items that are mostly just short animations with your character)
V3 has different characters and added PC interactivity with a now long-dead flash site
V4 has different characters and added school and jobs (extra minigames and ways to earn money). I think it's the first one where adult evolutions have explicit requirements and don't involve randomness.
V4.5 is a V4 with characters from the uratama instead of the entama
V5 and 6 change the gameplay enough to not really be "classic style" imo, same goes for the ones released after that.
Pic related is the suggested "normal" prices according to the discord (left column is new and right is used), but I can't vouch for how common these prices are in reality.