I too picked up a set of the 2013 Spitfire Pro's from Start Haus and have been scouring the interwebz trying to get some feedback on it while I wait to ski it.
Problem seems it was a rarity in North America so little in the way of English language reviews.
It is possible to find some in other languages so Google Translate has been a very useful tool in getting some info.
I wanted a front side carver; something with a <15m radius and about 170cm. I could not pass up the Start Haus deal, but will admit I did want the EDT...but just was not willing to do a 178 in such a focused ski at my weight and where I would use the ski (I'm 170lbs nekid so could have even gone down but did not need or want all of the edge of the 178 nor the slightly larger radius).
I also picked up a pair of the Fire Arrow 74 EDT's in the 172 in the event the FA's were much more similar to the Spitfire EDT's that I thought I wanted...I'll just sell the pair I was not going to keep.
So I now have both sets of skis. The FA EDT is retarded stiff. I am shocked that there are some reviews that make this ski out to be anything less than a very focused frontside scalpel...but then again, I'm just going by the incredibly firm flex of the ski (which is not enough to go by, of course).
Dawgcatching has a review on the Dob Spitfire EDT from '12 or '13 (same ski both years) on here and pretty much summed up what I would assume it would be like if it flexes anything like the FA EDT: incredibly stiff; very race ski like; nervous; focused.
From what I pulled from a very comprehensive German site was that the Pro was very well liked and more friendly than the EDT. But those euros love their carvers and clearly demand race like performance....so the EDT was equally loved, if not more so.
And this is where I think there is a big difference in what North Americans are looking for in the front side carvers relative to the Euros. Look at North American reviews of the Dynastar Course Ti or Head Supershape Magnum. The are both lauded as being top of their class front side rippers and generally garner nothing but the highest praise. In Europe: not so much: both are regarded as good but when the speeds got up they wanted more and got mostly mixed reviews.
Anyway, it's like any other ski, depending on who is skiing it and on what day and in what conditions you will get all kinds of opinions, but the Dob Spitfire Pro seems to come out as a ski along the same lines as the Course Ti or the Head SS Magnum (the DIMS and flex are certainly similar). The EDT version, I believe, steps it up into a very stiff "always on" chassis, if you will.
Anyway, bla bla bla. I'm looking forward to skiing both of these but just based on flex, I do believe I'll be parting ways with the FA EDT's. They are just crazy stiff.