Help please: which lefty fork?

Hi I'm looking to upgrade the lefty on my old faithful Jekyll 800 with a better (used) fork. I'm wondering which is the better overall package - the TPC or SPV?

Currently it has a plain vanilla 130mm Lefty with rebound adjustment only. It's rather bobby on the climbs. Not a major issue as I mostly climb seated, but I've just acquired a Manitou 3-way so i'm looking to match a fork to it.

The top-end AM models for the period 2005-2007 (Prophet) had SPVs but some folks have expressed a view that the TPC has better small-bump sensitivity. I know a few of you have had Lefty mid-travel bikes, so your opinions would be very helpful in removing my confusion.