I have to admit to being a bit underwhelmed with the majority of decaf's I have tried. I have yet to find one I am really happy with prepared as an espresso drink but I did get a pretty nice surprise last week when I had a chance to cup Counter Culture Coffee's Decaf Harfusa. Harfusa is one of the small communities in Yirgacheffe. This coffee surprised me a bit because its aromatics were quite muted. I didn't get the intense fruit/blueberry aromas that you might expect from a Yirg but I did get a most enjoyable fruity, sweet flavor after I tasted it. It has a nice crisp lemony aftertaste that I really liked. I haven't tried this as an espresso yet but if you're looking for a very pleasant decaf for a press pot or cone then give the Harfusa a try.
Cheers
Ian
