The Resolution 1 was very well received and excellent reviews can be found online, including Stereophile and Stereo Times. I never heard it or the 2, but I have owned the 3's for four years. Great speaker. I've read that the Resolution series was discontinued because it ended up being too expensive to manufacture for the price points Krell was shooting for. But I don't know if that's true or just a rumor.
My long-term impressions of my 3's are a little different than 2chnlben and his 2's. I completetly agree about the power handling--my standmounted 3's can play unbelievably loud--landlord breaks your lease and kicks you out loud. But not one hint of distortion. Acoustic music on the 3's is great: one of my favorite albums is The Grateful Dead's Reckoning, an acoustic set from 1980. Fantastic stuff. However, I recetly heard one of the cheaper Audio Note bookshelf speakers (it may have been the AX-2, $1,000) and the sounds coming from the tweeter made me stop and think about what kind of sound I should be looking for. It had this delicacy that the Krell doesn't have...a delicious delicacy. Anyway, where I think the 3's are weak is classical music. I just don't think the 3's are ideal at repoducing an orchestra. Repectable, of course. But not the 3's strong suit IMO.
I really went off-topic--sorry. I just don't see how somone could go wrong with Resolution Ones. Because they are no longer in production, and they weren't outrageously expensive to begin with (I think $11,000), I but they can be picked up for a very reasonable price used. I haven't seen a pair here on audiogon in awhile, but I definately have not so long ago. The only drawbacks I can think of offhand is that they are heavy.