V3 is one of the BEST tamas,IMO.
The games are fun as heck (Heading,flag,bump,sprint,memory!) Although the v4 has more..You just have to get correct skill points..
The items are also full of cute animations..I just love the mirror one.. So cute!
The characters are soooo cute!~ They brought back a lot of mesutch/osutch characters! ^_^
I like the simplicity of the pet,that doesn't quite mean its too easy or doesnt need much care,though.
The v4,though is really close to being as good as the v3.
But,if you like skill points and more games,go for the v4!
If you want a more classic tama,the v3 is your best bet! :3