My Advan 048s were toast after about 4k miles (including track events), so I was in need of replacement tires. I didn't love the 048s at the end of their existence, and so I wanted some tires with a little more tread depth. This car is used on the track, but a majority of its miles are done on the street.
TireRack recommended the Bridgestone Potenza RE-11s as replacements. I had to go with a wider front wheel than OEM (205 vs. 195) and reduce the height, but the fitment wasn't an issue. TireRack specifically recommended these tires over the Dunlop Direzzas. Final tally:
F: 205/45/16 - $158 per
R: 225/45/17 - $183 per
Pricing wise, they are a little more expensive than other street tires, but less expensive than 048s or R888s.
I had them installed at Metro Wheels in Marietta (they apparently have done a number of local Elises). My first impression was that the tires were much quieter than the 048s. There was less jarring and slamming over bumps and expansion joints and there seemed to be less road noise. It's difficult to say if the grip levels are comparable; that will have to wait for an upcoming track event.
I'll update this thread as I get a chance to experience more miles.