Jtinn, the importer of many fine audio gears, also like SF Power 2/3 over ARC VT-100/200 of the same era. SF gear is more transparent and extended, they are not too romantic sounding with stock tubes when compared to other usual suspects like ARC, VTL, Cary, or CJ.
ARC also belongs to extended and neutral camp, but it casts an unique tone on top that some likes and some don't. I don't, I did not care for any of their pre amp since LS25 to Ref 3, neither did I care for their power amp from VT-100 Mk 3 to current Ref 300 Mk 2.
On the other hand, I found SF gears sounding silky, extended, and enjoyable in my very high end system. I would not hesistate recommending SF Line 2/3 or Power 2/3 especially at current used price. you will need to spend a lot more to better them.