Well, the first ones are for seven speed cassettes. The second ones are not drilled for presta valves. The wheel building is the key to a good wheel. Not so much the rim or even the spokes.

Here's a photo of my bike loaded down. Total weight, 115 pounds not counting the rider. Bike has close to 4,000 miles on it with the original wheels still true as day one.

Don't tell anyone but the wheels on both our 26" wheeled touring bikes are the original 32 spoke wheels that they came with. Never touched with a spoke wrench since they were first installed.

Try the wheels you have. If you think they were good for mountain biking there's a chance they'll be good for touring too. Just carry a spoke wrench and a couple of fiber fix replacement spokes. Should have them on tour anyway. Never needed mine and doubt I ever will for as long as the braking surface on the rims lasts.

And if you ever want to give your wheels a good test, head to Maine and ride route 52 from Belfast to Camden. One of the more abusive paved roads I've ever ridden on. Having ridden from Burlington Vermont to Bar Harbor ME and back, that's saying something. Just say no to frost heave!

Have fun building your bike.

Cheers,

Ron
Wasatch Mountain Range, South Ogden Utah