decide it you want full water proof or not, then check the weights (this will leave you with a handfull really)
I personally think the contenders are:
haglofs oz (pullover) paclite goretex
Haglofs LIM (Jacket) paclite goretex
Rab Demand (Pullover) event
OMM (smock & jacket)...new event fabric coming soon
Montane dt & dt stretch (not sure on the fabric, but theres quite a few offerings from Montane).
Marmot super mica (Marmots own fabric)
I hear that Event is the most breathable (but I would think the'll all get sweaty when working hard like running).
The Haglofs stuff isnt cheap, Montane quite well priced & I would think the omm stuff would drop even further after the new stuff comes out this month (petebland is expecting them in end of this month).
hope this helps?
being injured leaves me with lots of time to look at jackets! hahaha

