Onroad HPI Phaltline with tape on some nice Tremor wheels
Offroad is like neil said, depends on what you run on. I have a set BadLands and a set of Mashers. The Mashers are supposed to be one of the best all terrain tires out there (that's also the reason I bought them for my Rustler back in the days and they still look great). The BadLands perform better on some nice dirt or sand.
I still have a set of (4*) 40 serie Mashers (only tires with foam) lying here. I bought them for my Flux but then bought some rims and tires together so never used the 40 serie Mashers.