I use a Hilleberg Akto (1 person single transverse pole) or a Hilleberk Allak (2 person dome).
My tent requirements are
a) storm proof
b) easy & quick to put up by me on my own, even if it's in strong winds
c) not dependent on good pegging (i.e. flexibilty of peg placement, so if there's a buried rock where the peg should ideally go, another nearby location will do)
d) sufficient porch space to accomodate all my panniers (the saddlebag stays on the bike), and still allow entry/exit space, or cooking space.
e) enough height to sit up. I have no problem staying reasonably still, and don't really need lots of inner tent space
f) a side door rather than an end door.
g) the ability to close up and keep the weather out and the warm in (i.e. a Euro style tent, with a down to ground outer and not much mesh on the inner).
Previous tents have been...
Saunders Jetpacker (too coffin-like, dependent on good pegging)
Terra Nova Quasar (too big & heavy for bike use, died of PU coating rot on the outer)
A quick-pitch version of the Tadpole (too bulky for bike use, as the quick-pitch feature impacted on the pack size and the ability to easily separate inner/outer/poles)
A Terra Nova Solar (not strong enough - I didn't appreciate the pole hitting my head whilst I was sleeping).