In reply to deacondeacon:
> (In reply to Mr Mark Stephen Davies) Landscape books look nicer on the coffee but are crap at the crag, they fall apart much easier. Although the font 7+8's combatted this with a nice hard wearing cover. Tbh I'm looking forward to the day they're all on my phone.
That's interesting. I have to admit that although I love the quantity of data on my phone, I don't like using it at the crag in anything less than the most benign conditions. I don't want my phone to get scratched up, filled with mud, wet, dropped onto rocks etc (which all my guides get, regardless of how careful I am). Plus, in my experience I think that my phone is too small to really do a topo justice. I guess technology will advance though, so when a robust, possibly flexible cheap tablet with great battery life comes out (I guess along Kindle lines), I will probably ditch the paper guides.
In the meantime, I much prefer portrait guides. Size of the guide is also a consideration - I don't mind a larger giude for single pitch venues, but multipitch guides should definitely be small enough (both in page size and thickness) to be comfortably carried on the route.
Although I don't particularly like the landscape format, I can definitely see the advantages on some occasions. For example, you can get a decent topo of a whole face of a boulder with descriptions on the same/facing page. I'm not convinced that this is used to best advantage all the time though. Even the traditional guides tend to print crag topos landscape, so I guess it may have evolved from there.