My first big favorite was the Victorinox Ranger. Specifically, I appreciated the scissors, file, and saw along with all the basic tools it had.
I like the OHT for walking through the local woods now. I put a Photon microlight on the lanyard ring -- along with a lanyard. Pops it right out of my back pocket.
I did get into carrying a red alox Farmer, sat under my wallet, left front pocket. Very convenient, and covered most ordinary tasks nicely. I carry a leatherman Skeletool CX instead now. I have carried a Victorinox Classic all along. Normark made me a sheath for it so it rides on my keychain but pulls out easily for use.