The best I have found for working on bikes is to have (at least) two different torque wrenches.
One is 1ft/lbs to 75ft/lbs, 3/8" drive. This is great for all of the 6mm fasteners that are torqued anywhere from 5 to 11ft/lbs. If you need to torque in inch/pds, just convert by dividing by twelve.
The other is 45ft/lbs to 250ft/lbs, 1/2" drive. This is good for axles, clutch hub nuts, starter clutch, etc..
Both of mine are Snapon's. Expensive, but well worth it. Occasionally I could use an inch/lbs 3/8" drive, mostly because of it's small size. But the 1Ft/lbs to 75ft/lbs 3/8" drive covers 90% of what I need. I believe it costs over $150 nowadays.
Dave