Many thanks for all your thoughts and ideas. It's such an exciting time for me and I value what you have to say, especially looking through the web-sites.
I guess it would be true to say that I'm probably more inclined to want to create images that are more about ambience than pure "visual" records. Landscape wise I often work at narrow angles of view and also small Depth of Field. I'm not really a wide vista man! although there are times.... I generally spend a lot of time processing, but part of that is to try and de-dSLR the look of images!
I therefore had the thought that a 6x7 with a P30+ or P45+ would be similar to getting the reach on a dx format dSLR and using the sweeter spot of the lens. I'm sure a Psomething will arrive oneday that is 6x7 full frame too!
I had a play around with a twin lens reflex and loved looking into the ground glass, even if it was all back to front! I find the idea of putting a big black cloth over myself very appealing as I hate losing myself within a scene to be brought back to the world by being interrupted by someone! I generally operate my D2x (in the field) on a tripod, heavy weight, MLU, bracket for blending etc, but I find the composition and interface experience with the world a bit key hole peeperish!
I would also would like the ability to improve my outdoor portraits, now if that meant adding a 645 latter then that would be fine, provided the back could go between the too.
However after having a look at the new sinar, Foto-Z should that be in my options?
I may end up large format someday, but feel that this is the next step for certain aspects of my photography.
I'll end up spending a couple of days in the dealers and probably rent some options although very aware that making decisions without the benefit of experience in use could be foolish too!
Thanks Steven