Finally today I stumbled across a potential replacement. Snarfer is a free RSS Reader that also supports queries on Craiglist, eBay, etc. I don't expect to use those features but can remove the plugins as necessary. The simple fact that Snarfer supports plugins has some interesting potential and I look forward to some of the options that will be available in the future. The interface is similar to Abilons; clean and simple. Snarfer also seems to be faster and has a better icon(!).
Updated: This is for my laptop running XP. Vienna is my reader of choice on the Mac.
[Listening to: The Imposter by Kevin Max]