I've ridden on the Corbin Smuggler, the N-H solo, and the Triumph 68 Solo:
The Corbin is lower, narrower, very firm, and very well shaped. It does pass on some vibration, but is pretty comfortable and well suited to persons with a short inseam. The quality is high, but since I did not install it I cannot comment on the fit. Price is $799 from Corbin.
The N-H is beautiful, well shaped, and well made. It is a bit narrower than the stocker, making it better for shorter legs. Nice "Triumph" and "Norman Hyde" embossing on the back. Reputedly comfortable, but a little narrow for me. Price is $399.99 from BellaCorse.
The Triumph 68 Solo looks great, is well made, and is widest of the three. The foam seems more supportive than the stock seat and it fits perfect. I find it very comfortable, with a flat surface and lots of room to move around. The newer "68" version of this seat is embossed with "Triumph" on the back. Price is $238.50 from the Triumph eStore (Hermy's).
These three seats are all pretty good, by my observation. The Corbin is best for people looking for a little easier reach to the ground and a storage location. The best qualities of the Triumph Solo is the wide, flat seating surface and the low price. The N-H sort've splits the difference. Triumph Solo on my '03 T100 below:
