Now when I bid the old fashion way I'd still wait until under 10 seconds, and mainly because I didn't want to bump the bids up unnecessarily.
One of the things with gixen is you can define a bid group. Let's say you want a Macbook Air, you can add a number of auctions to gixen in a group with bids for each auction, and you just pick auctions with different end times so they don't all end within the same couple of minutes.
Then it will keep going down the list, sniping until it wins one. It cancels the rest of the group after that.
This way you don't bid on 10 laptops and end up with 10 laptops.