I couldn't comment on comparative quickness, because I haven't used the Paselas- Fair enough if they're a nippier commuter. Horses for courses, I suppose. They're not actually much lighter than the Marathons though- 460g compared to 520g @26x1.5". I'm talking about the original Marathons, not the XRs or Supremes or Duremes, which are heavier (in case there's any confusion).
If you do a lot of touring miles, the Marathons work out roughly half the price. They also have tougher sidewalls, so are less prone to failure in that department. They're certainly not sluggish either. Best value touring tyres around, IMO- By some distance.