Try a Shinko 700 front - much cheaper than the TKC. Have held up good for me even on the road (with the bike loaded) and riding fairly aggressively through some twisties. I ran a 705 on the rear and it performed well. Had a 700 front and 705 rear last year in Moab for the Adventure Rider Challenge 2011. Lots of deep sand, water crossings with some (not lots), but some mud sections. Pretty good combo, especially if aired down. I got a set of 705's and a 700 front on sale, delivered for under 125 total.
That said, I did just put on my first Scout K60 on the back to try out. I burned through the 705 on the rear quickly and wanted to see how the K60 did on mileage for my riding style and terrain.
3Rrr = Read, Ride and Reflect
09 BMW F800GS
89 Kat GSX