Do you have an Anaconda in your area? I picked up a couple short-sleeved T-shirts in a technical fabric there which are quite decent. They've got a selection of cycling gear, but they also have other outdoorsy clothing as well. And their prices aren't too bad.

Another one to check might be Kathmandu, and I've picked up several jerseys from Torpedo7 in New Zealand. They may have other tops as well.