Hi. I'm about to press the button on a purchase of some new Spitfires for my 400f. I used to run them on 76 750F and thought they were pretty good, but there were some rough moments riding through the typical New York City street with its goo, oil residue, barf, dead rats, trash truck juice, sand, steel plate street covers, potholes, dog poo, garbage, wavy pavement, cobblestone, autumn leaves, big smooth painted letters, subway grates, bridges, etc. Plus there's the pure gold that they use to pave the streets here for the immigrants!
Anyway, I know that no tire is a cure for all these things, but just want to make sure I'm getting something gummy enough. I don't put tons of miles on each year, but I do ride around almost every day that its dry. Anybody got any suggestions?