[gordon g]

There are 2 parts to this query. Firstly, as part of a photography course I have to put togther a selection of 10 prints for presentation. Secondly and more generally, I have been thinking of the best way to present prints for exhibiting for sale. Likely venues are local tea rooms and art/craft fairs. Previously I have produced prints on a 1:1 basis, with the size/format etc being part of the discussion.
The selection I have made is mostly landscapes, to fit with the main subject of the course, with a mix of big views and more intimate detailed shots and a coupe of macros, and the subjects fit together thematically. For the course, I have printed them at 18" by 12", or 12" square with a 1/2" border on hahnemuhle bamboo paper. This works well for the chosen images, but there seems to be at present a fashion for big borders.
I'm a little undecided about this - is a big border more appealing to a purchasing public, and if so, even borders or in the same proportions as the image? Mounted or not? What size for commercial exhibitions? (I have thought closer to A4 might be better here - the big prints look great, but when framed up they would take up a lot of wall).
I realise there isnt really a 'correct' answer to this, but I'd be interested to hear others' approaches and ideas.