These road riding comparisons between spoke and cast are my main interest. The extra work to clean the spoke wheels is no bother as I don't mind spending time once or twice a season doing the fiddling required. As far as ease of air fill I am used to using a thread on 90 degree adapter with my K 1200 GT as the rear wheel has the air fill in a poor location not accessible to almost all pumps so I just keep it with my on board pump. I also have come to appreciate the on board TPM on the GT and have it ordered on the new bike as we'll. I prefer the look of the GS with spokes.