CatEye has done well for me... had mine for about 10 years. Replaced a battery once. Still works great... here is the simular 2005 model i have...
http://www.cateye.com/en/products/vi...d=6&subCatId=0
And here's how ya mount/calibrate...etc:
http://www.cateye.com/en/pdfs/CD200N.pdf
I would not own a computer if it did NOT have Cadance... tis a must for me. I have seen a Trek that has a "Pace" feature.