Currently using Bridgestone Potenza G3, firm & stable ride...abit noisy though....quite a number of Lations feedback on the Hankook V4 tyres...best person to give feedback should be Bro Carmodz... 
haha bro, ur news more updated than anyone at Hankook leh, so far got no V4 in the stock inventory heehee
only V2 (for 15") aka V8 (for 16" and above)
Latest: V12 Evo. However, for this model, the lowest aspect ratio is 50. means 15" rims not able to install liao. even 195 55 15 also don have. Therefore for bros who are on 15" they are able to install V2 or K415 only. K415 has exceptional wet grip. Dry grip is decent but the wet grip is SOLID. Track tested on Gudang by vincecarlo with a Nissan B13 M/T. A German Automobile magazine did a independent tire test and the results for the wet was outstanding.
but here's one thing i don quite understand. to my surprise, the K415 actually has a shorter stopping distance in the wet than in the dry. When i checked out the other brands, also same

Must do abit research liao, why...