Hi Ray,
yip the breathable are rather expensive and in my experience they have to be minded very well especially when near thorny shrubs and gorse that seem to be along most pathways to marks down this way.There main advantage is that you bearly know they are on in comparison to the neos which will leave you sweating alot if really rock hopping.
Also some neos have crap boots that offer little or no grip and have to be studded to have any chance of preventing any ass injuries.The breathable waders are'nt much better but if you get the boots separately just screw in metal studs and you are sorted and are definately worth the money which can be dearer than the waders
Don't buy felt sole boots as they are death traps when trying to get back up some tracks especially after bit of morning dew or rain.
Overall id go for the breathables much more comfortable and more manouverability in potentially dangerous situations
,however a lot of good reports from a few lads that use vass studded waders,no they are'nt breathable but don't seem to be as sweaty as the neos.
Tight lines