Compression shirt

[pencak]

I've been using an Under Armor long sleeve for a base layer that works good for a wide temperature range and wicks great. What I'm wondering was about the newer fabrics and other "hiking specific" type base layer shirts. Features like:
Wicking
Comfortable in a wide temperature range
UV protection when used by itself
Durable
Wind protection
Variation in fabric density (pit vents maybe?)
Not easily snagged on stuff

Any ideas on what would fit the bill?

[pencak]

I guess I should clarify...
Cotton is out because I go to the tropics also. It never dries out down there and seems to breed exotic mold even when sitting in a supposedly "dry" closet. As for sun protection, I'm very familiar with the "rash guards" used in surfing and other ocean sports, have used them for years and they work 100% in blazing equatorial sun reflected off the water. My head and neck will look like I sat under a blowtorch and my back and arms are unscathed. By accident last year, I wore that long sleeve Under Armor thing on a hike to Havasu Falls and it seemed to work great. It wasn't hot when it was over 100 out and worked as a base layer great. However, I was wondering if there were other advancements out there that might work better. As for regular loose tee type shirts. Those loose fitting cotton looking (but not) synthetics are the best things ever invented as far as I'm concerned. Almost everybody makes them now (I think Under Armor came out with them first.) I even got a few noname brands at Walmart for $2 each. They're lighter than a cotton tee and dry almost instantly.

I tried the same kind of long sleeve compression shirt from Cabellas and it felt incredibly uncomfortable. It made my skin crawl and I felt like my epidermis was festering in that thing 30 seconds after I put it on. It appeared to be of the same fabric as the UA shirt but for some reason I had to tear it off after 5 minutes.