The Bridgestone Potenza RE001 (Adrenalin) tyres are fantastic - high performance, great in the wet, excellent handling. :)
But, as with all good performance tyres, they're soft and will wear quicker than a standard tyre - they're also more expensive! :(
I prefer saving till I've got the money to buy GOOD tyres - they're the only thing keeping my car on the road!
If you've got your heart set on Yokohama tyres in particular, I would recommend the S.Drive over the C.Drive for the same reasons as above.
I'm assuming you've got 215/55/17 sized tyres - I think the Sportivos (SV6 & ZR6) use that size - in which case you could also look at the following:
DUNLOP: SP Sport 300E, Le Mans LM702
MICHELIN: Energy MXV8 (standard on the SV6 & ZR6 I think)
GOODYEAR: Excellence, LS2000
KUMHO: Ecsta ASX KU21
Hope that helps!
