I'm a huge fan of the Giant Transend, i sell all the ones we get at the shop the second the come in.
I do not recommend the Suede, crappy components, i would rather put a customer on a Cypress ST/DX than a suede any day of the week.

The Seek, we haven't ever ordered one so i can't guage my opinion of it from experience with it, but from the specs it looks like a nice ride that i would put customers on.