Picture posting is enabled for all :)
I've found the six cell ones very useful. Like Tim , I only grow a succession of a few things at a time too so a small amount of cells is ideal rather than mucking about with a larger tray of small modules when things germinate and develop at different rates.
I buy the seed trays with 40 modules (8 x 5) then cut them down the seams to give four sets of ten (2 x 5). Then, if the seed types germinate at different times, they can be swopped into different propagating trays. That way they all end up grouped according to what stage of growth and/ or conditions required.