| Excellent post this & paticularly interesting for me as I was teetering on the edge of joining in this year!
I was lucky enough to have a go of Tonio's 620ss for one of the sessions at the Brands TA(?) last Oct. I couldn't believe how much fun a bike with so little power could be & how quick it could lap. I felt like I was taking it easy, but my lap times would have been quite competitive. I'm sure you'll get a few people hooked if they get a test-ride on a DD bike.
As I had reached a point where I was a bit bored with trackdays (feel like I'm just plodding around), I thought a bit of competition might be the edge I needed. I went home & started doing some sums.....which brings me to exactly why I didn't sign up. The only way I could afford it would be for me to sell my road bike & that simply isn't an option as I still really enjoy riding on the road, trips abroad, etc.
As I couldn't afford a season of DD, I decided to continue to look for another form of competition. So this year, I've decided to not do any trackdays at all & I've bought myself a 2-stroke KTM & I've been doing some enduro racing. It's great fun, but given the choice, I think I'd rather race DD.
For me, the only reason for not entering DD was lack of funds. From the outside looking in, it looks a great race series. Enjoy!  | 
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