The tarmac is an amazing bike, its so well put together, light and really responsive, the bike is stiff and climbs really well and its comfortable for long distances, while remaining a very fast road bike... its such a good bike and so so easy to ride that the eventual result is a little bland.
The Venge by comparison always feels like it wants you to go faster, the riding position makes for uncomfortable rides over long distances, the bike is harsh, every pot hole you find feels like your teeth are coming out but damn its fast, very fast.. Every ride on the Venge is an experience, it's an amazing bike imho but not for everyone... The Tarmac is for everyone