I have mixed feelings about the Blackbird. The first one I had (an 05) I hated - the handling was ponderous and whilst it was fast it was strangely dull to ride. I then had a ZX12R (the one in my sig) which I loved to pieces. As Stormer says though, its very much on the sporty side of what you're looking for, although it was fairly comfy with Helibars. Biggest drawback for touring was fuel range and economy. 30mpg and a range of 120 miles tops.
So then I bought a Speed Triple, which I still have, but needed a bike to go on a tour to Germany on. The local dealer had a '99 Blackbird on for £2700. It only has 13k miles and seemed a bargain, so, baring in mind my previous experience I slighty reluctantly took it for a test ride. Within a couple of miles I wanted it. Its such a different bike to the 05 - handling was far better, and the engine had a more raw feel to it at higher revs - almost Kawk like!
So I bought that in June and havent ridden the S3 since. Touring was perfect - I was comfier than my mate on his 08 Busa and faster than the other on his R1200GS. The bike never missed a beat, and was equally at home on the Autobahns and the D500.
I'm now thinking of selling the S3 as I just always seem to prefer taking the blackbird out. In fact I'm really struggling to think of a better all round bike to upgrade to. The new VFR doesnt interest me - too heavy and too short a tank range. The Triumph ST is ok, but doesn't have that ballistic top end, and the Busa and ZZR1400 require a lot of modifications to make as comfy.
Which leaves me wondering why I hated the 05 bike so much. I'd love to go back and test ride it again, to see if it really was so different, or I'd just changed as a rider and was less intimidated by the bike 2nd time round.
Take one for a test ride though - I don't think you can buy more bike for the money to be honest.
Pic of mine in Germany:
And heres the 05 bike I had a few years ago