hi sean
i've got a 2007 Five 20" and run air pikes on it which are great, never seem to need to wind them down either, so i've also been considering investing in a 2010 Talas 36 – 160mm for dh and 130mm for everything else; as the middle setting (130mm) will be much the same as the pike at 140mm
i've also got a lyrik 2-step on a 18" patriot xcel and considered the swop but unfortunately orange cut the steerer way too short for my Fives massive headtube… typical!
the lyrik isn't light thought (2.5kg), and i find it no way as adjustable as the pike as it is solo air and not dual – the pike is way plusher, but the 115mm travel setting is a god send for climbing on the patriot. My 2-step has also had to be repaired twice now, so i've little confidence with it on long weekends/holiday trips away
115mm 2-step will be similar to a pike wound down to 120mm-ish
HTH