Hi John

I assume you've seen our review?

http://www.surfski.info/content/view/485/156/

Hi John from sunny Florida (USA)
I currently own a Think Evo in Kevlar (top model) and an Epic Value Sport (base model).  I have also owned a Fenn XT in fiberglass.
Below are my opinions.  Use them or dismiss them as you see best. 
I am an average paddler and like the bumps.  I am ambitous but have looked at the backs of some fast paddlers (not that much fun).
The Evo's fit and finish is flawless.  My Sport has multiple flaws.  The seating position of the Evo is VERY comfortable.  The seat is above my feet.  The seat is snug but not too much so.  The Sport feels like the seat is lower than my feet.  I have not heard others complain about this so it could just be me.  The seat is also too wide even for me.  The width of the Sports pedals also pinch my size 12 EEE (big wide) feet.  The ventura on the Evo keeps the footwell dry all the time.  The Sport always has at least an inch plus of water in the footwell (this could be me as I weigh 225 and my exercise pace is 6.5 mph.  A lighter faster paddler may have a different viewpoint).  There is less space between the foot brace of the Evo and forward bulkhead than in the Sport (less water to carry around if you fill up the footwell).  Of course at 5'10", I am not that tall and a really tall guy may appreciate the Sport's extra room forward.  The rails on the Evo are higher than the Sport's (drier ride).  Both boats rails are about the same heighth at the seat.  I also love the tether that my Evo has between my legs.  It is a great place to put and secure my water bladder.
The Evo is faster on flat water.  The Sport picks up waves better.  I also think the Sport is less likely to broach (it's rudder is more forward).  Both are a lot of fun in the bumps!  It is a coin toss on stability.  If the Sport had a narrower seat it may be a little more stable.  The secondary on the Sport is about as good as my sea kayak's.
I sold my my XT.  With me in it, it was not that much faster than my performance sea kayak.  I felt like I sunk the XT.  I sold it to a guy who weighed about 175 pounds.  He was fast in that boat.  The fit and finish and price were great.  It was a little heavier than my Value Sport.
I currently paddle with two guys.  One owns an Ultra Sport.  The other owns a figerglass XT.  The guy in the XT is new.  He is pretty fast but not quite up to me in the Evo or my buddy in his Sport.  To soon to know if it's him or the boat.  My opinion is that the XT is not as fast as the other two.  My buddy in the Sport is as fast as me BUT with me in the Evo...I am always a head.  That makes me very happy (if you can't be good, buy faster). 
Of the three above, the Evo is my favorite boat and I love it!
I do not have the talent to paddle the "Big Boy Boat" (Mako 6, V10, Legend, etc.) in the bumps and go as fast and have great fun so I stick to the intermediate boats...which I love.
I have a buddy who owns a Mako 6.  He thinks the Evo splits the difference between his boat and the Sport.
I hope this has been helpful!
Good luck
Franklin

I found the EVO faster on the flats and very small chop to a similar wieght Sport. Catching larger clean waves they are similar in the amount of effort required to get on the run, which is a lot more then say a longer V10. Both surf about the same using the standard sport rudder vs EVO rudder and can be leant over easy to stear when the rudder is out of the water. I had my EVO in much bigger/ messy conditions then ive had a chance to be in on a Sport so cannot compare that.

I felt comfortable and confident (sometimes very nervous but happy for the stability) being on the EVO, id imagine the Sport to handle the larger conditions the same if the seat was padded out.

Secondary stability, the EVO was better. You really need to paddle all 3 skis and work out which one suits you best but i dont "Think" you'd go wrong starting like i have on an EVO.

nesurfski had a review comparing all 3 skis.

Hi Superted

Thanks for your feedback, it's a great help.

And thanks also to Rob for your help.

Cheers
John