Hm, can you tell that I like Hayden-Harnett (HH)? I don't even want to count how many of their bags I have! :) I find the quality to be better than Coach. It's a good mid-range line.
The Conrad is very nice; I've tried it on before in person. It looks small but can hold quite a bit. I didn't find it to be heavy for a bag made of mid-weight leather; the exact weight would depend on the color you get, since each color leather has a different feel.
Clutch Seattle carries HH bags. Hopefully you'll find a Conrad in person!
Right now, HH is having a summer sale, with free shipping (not sure how long the free shipping lasts). They also have free returns for items not marked Final Sale, or over 75% off, so it's a pain-free way to check the bags out. However, sometimes they can take awhile refunding your credit card if you do decide to return; they are a fairly small operation and get swamped during sales, although they've been getting better over the years.
Oh, if you have any problems with their bags (e.g., broken hardware), HH will take it back and fix it for you, free of charge. However, they send the bags to Asia (Hong Kong, I think) to get fixed, so you'd be without bag for a few months.