I haven't tried these, but the TV3 has moderate to high ester ability and the Y2 has low ester ability; so my understanding is that you would get more flavours from the TV3 and a cleaner taste from the Y2, although I would be good to hear from someone with a bit more knowledge on the subject.
I used the TV2 in a strong mild, which came out very nice, it has a predominant liquorice flavour, although that is mellowing over time.
You can always ask Brewlabs to recommend a yeast for whatever you are brewing, they have loads of yeasts that aren't on their website list.