Pitching a tent

Hey dudes. It occurs to me that, in preparation for the Hood Canal trip, I should stop procrastinating and actually buy my own tent. But, since I only really need a single-occupancy tent, I'd also like to kill two birds with one stone by getting a tent that I could use for backpacking at a later date.

SO: can you recommend an inexpensive, compact-and-lightweight tent that would work well in a backpacking context? Or maybe a location in Portland where I could acquire one?

Gracias!