I just changed out my BT021 front/BT020 rear combo on my last road trip to CA.
I measured them both up before I left and wasn't worried about the front, but the rear was iffy.
However, for the 3rd year in a row I needed tires on the road. The BT021 front actually went away first, the last 3rd of the tire went away in 2000 kms (1250 miles) including the harder centre section (damn California twisy roads
).
Anyway, the BT021 front only lasted 2/3 of the life of the Pilot Roads, but the rear BT020 was similar to the Pilot Roads. I didn't notice any grip difference between the BT and the Pilots, both were great in my opinion.
I was hoping to try out the Road 2's but I ended up with Dunlop Qualifiers, as that was all I could find on the road. So...3rd brand now. Seem to stick good...life is unknown.