In reply to Simon Caldwell et al:
First up. The SL is not a GTX boot. The Ranger does come in GTX and non-GTX versions, but the SL comes in non-GTX only.
As for non GTX boots, there are lots. Really. Lots and lots.
Wide boots, look at Aku (Italian manufacturer), and Alt-Berg (British designed and made, also made in Italy). Aku have generally wide forfoots, without being too high volume. Alt-Berg have 5 different width fittings, for every boot, in every size. They will also custom make you a pair if you're super weird.
Your feet will sweat in any boots. Much of the sweat removal is through your socks, so try different (thinner) socks. Leather is not-nec. more breathable than GTX. It depends how you treat it.
Cleaning GTX is simple. Make up a solution of your Grangers Wash-in cleaner, and pour it INTO your boots. Leave them overnight, and pour out. Works wonders on any boot, even non-GTX.
Water will seep into the outer material of any boots. Again, it depends how you treat it. Keep them clean (like properly clean, use a footwear cleaner), and treat them with something to improve the DWR, and the water won't soak in as quickly. Yes... if the botos is saturated, then capillary action will draw moisture down to your foot, through the big hole, but that happen on leather boots, as well as GTX boots.
If you don't like GTX, then don't buy it, but for some people it's fine. I know people who only wear Buffalo clothing, "because nothing else works"!
Lastly, if you buy a crap, cheap pair of walking boots, then you will def get value for money. Little money, little value!