I've given my new TFO Axiom II-X 6wt some testing and so far I like it for $199 but I'm still thinking the Echo 84b is the solid new favorite with the Boost Blue in 2nd spot. Axiom II-X seems a bit more sluggish/heavy than the Boost Blue. I have to slow down my cadence a lot more with the Axiom II-X which may not be the worst thing, but still...