I wear the one-day disposable lenses. My eyes gunk up very easily and these have worked out great for me.
After a long ride ("long" for me being, oh, 60-ish miles cough cough ) I'll often have that gunky film over my contacts so it's really great to be able to pop them out and put in a fresh pair.
They're kind of pricey, but maybe you can use them just for your long rides, and your 30-day contacts the rest of the time?