Yokohama Avid V4S performed very well for me in both dry and very wet conditions. I did not use them in deep snow however, so can't speak for that. All other conditions, they were the best I've tried. Tightened up the mini-van's slushy handling nicely, too.
I am brand new to this forum and the owner of a 2004 Sienna XLE FWD. After the original Dunlop tires wore out at approximately 27K miles, I purchased the Yokohama AVID TRZ. I loved the ride and quietness of these tires. However, they only lasted approximately 26K. This despite the fact I maintained the proper tire pressure and I rotated the tires every 6K miles. I just purchase a set of Michellin Harmony and I hope this will last a bit longer.