Can't help on a comparison, but I have to say the v10 is the easiest car I've ever worked, belts can be changed in minutes, a big plus when club racing n pushed for time! Lots of nice touches on the car that set it apart from the rest, that's what drew me to it.
If you want a car in the uk too race and be able to buy parts track side at a national you have 4 choices really- 733 nt1 v10 and Edam there the only cars with good support! I'm sure the Capricorn is a great car but to race it your gona have to stock your own spares unfortunately.