How I Varnish My Paintings - Gamvar vs Winsor Newton Artists' Gloss Varnish

Which is a better varnish for oil paintings: Gamblin Gamvar or Winsor Newton Artists' Glass Varnish? Watch as my assistant Gerardo Nuñez and I compare both art varnishes, give our opinions, and I go into detail about my experience with both varnishes and thoughts on their differences.