I like bicycles with a 20" (406mm / 20 x 1.35 to 2.125) wheel size. I try to keep this list at as close to 100 PSI as i can because it makes a big difference in rolling resistance compared to lessor pressure tires. Also, just want to mention that Bike Friday has a pretty good selection of 20" tires.

1. primo comet 20 x 1.5. Comes in different sizes but i think the Primo 1.35 might be same size as the Kenda Kwest 1.5.
2. Avocet   fasgrip freestyle carbon 12 20 x 1.75 80 psi
3. Ritchey tom slik
4. Schwalbe Marathon Plus Tire 20 x 1.75
5. Kenda kwest 20 x 1.5 100 psi
6. Tioga ST comp 20 x 1.75
7. Tioga comp pool 20 x 1.75
8. Vredestein S-Lick 20 x 1.3
9. Schwalbe stelvio 20 x 1-1/8
10. Vredestein moiree 20 x 1.75
11. Scorcher slick 20 x 1.75
12. Nokian city runner 20 x 1.5 & 1.9. A lower cost tire.