So just got a shipment of 25 Astra SP's in from Canada this morning, and boy, I'll tell ya. These are much smoother than Feathers IMO. Feathers are sharp as all hell, but tend to tear me up if I'm not fully present/conscious of each stroke. These Astra's though were something else. So sharp, and so smooooth. I love them, best purchase I've made all week. Aside from the Gillette Single Ring O/C with frosted rose plating I scored for 35 bucks, which came with a Blue Tip SS! What a STEAL. Also, just got a bottle of Jovan Sex Appeal a few days ago, and my oh my does it BURN! I can't handle the burn. But it just smells SO GOOD! 
