Ok, so perhaps this better for another thread, but I'm at a crossroads on a commuter bike. I have lots of frames, but longer lots of budget. I have a full suspension MTB with knobbies for the dirt, Merckx for long rides, a carbon frame for the shorter rides when the group likes to hammer me, an two late 80's steel frames without rack eyelets that aren't built up (a Paramount and an RB-1.)

If I go the rack route, is there something study and stable that doesn't need eyelets? I ride all nicely paved roads, the commute will be about 12 miles each way, and if I damage the work laptop that would be bad. I'm concerned about the weight of stuff overwhelming a non-eyeletted rack.