+2, you may have a rally good reason for wanting a 2x3, but I would opt for the 5x4. I often use a Linhof 6x9 back on my Technika and Ebony, but the option is still there to add a 5x4 DD. The Ebony's are really light and beautifully built, not hewn from granite like the Technika, but great to use all the same.