Fabric boots with a gore tex lining don't tend to last quite as long. The uppers aren't quite as durable, but generally more than good enough. The problem is that when the lining goes, which it will, the boot will leak. A leather boot, even one with a gore tex inner, doesn't have this problem as you can always treat the leather. The liner wears out because grit will work its way into it (washing the inside of the boots out periodically can help).
As a general rule, a fabric boot can be slightly lighter, will take less time to break in and will be slightly hotter on your feet than a non-goretex leather boot.
I've not worked fitting boots for a couple of years, so I'm out of touch, but if old Scarpas and Asolos fit, you probably have narrow, rather than slightly narrow feet. Meindl will almost certainly NOT fit you, and newer Scarpas probably won't(they dramatically changed the fit of their boots a few years back). Brasher probably too wide and usually fall apart.
Asolo should fit and are always very well made (we only ever saw them come back in when sweaty-footed punters reckoned they were leaking. Were they bollocks). Zamberlan are similar, but quite high in volume despite being narrow. Salomon will probably be ok (not quite so well made (well, they weren't a couple of years back) as a general rule). Raichle might be worth a punt too.
However, as I can't see your feet I could well be talking bollocks.