I love Vittoria tires, I've run Conti 5000's and do not feel any higher rolling resistance in the Corsa's. Did a race in Texas with a very heavy chip seal (Texas Cobbles) the combo of the Corsa tires and latex tubes were perfect for contact and limiting the bounce or chatter from other race tries. The Twin pack is a great value as well.
As a former racer, this feels almost like riding on tubulars. Precise, smooth rolling tire and great road feel from latex tubes. Avoid costly errors, latex tubes require care to install. Watch a youtube video if it's your first time doing that. Yes, they need pumping up before every ride, but I do that in any case.