Traded up Shadow Phantom to Interstate. I only have 1,000 miles on the Interstate, but I like the bike. Much better power than the Phantom for times when high speed roads are necessary or preferred, but still smooth and maneuverable for the2-lane county roads I love to ride. HOWEVER, THE SEAT IS AWFUL. I currently am sitting on cushions (one-inch extra-firm foam held in place by a gel pad (which, by itself, didn´t help much). While this makes riding somewhat more comfortable, I am considering an after-market Mustang seat. I´d welcome any comments or suggestions.