At work I have a 250 lb. in. Techwrench with 1/4 inch drive and I like it. On occasion (spark plugs) I use an adapter to use a 3/8 drive.
Are these wrenches the same otherwise (length)?
I feel that a 250 lb. in. wrench is better since it will go up to 21 ft. lbs. to cover a few more applications and over lap your "middle" torque wrench (100 ft. lbs.)better.
Also, when I try to use a torque wrench on a soft gasket applications, I find it difficult to do. It seems like the gasket smashes down, then sort of releases a bit. In other words, you can torque it to 10 ft. lbs., then come back with the wrench still set at 10 and tighten it again. Be careful not to overtighten. I usually torque it to the spec. the first time, then if it leaks or seeps later on, I tighten each bolt and equal turn (1/8 to 1/4). Just my experience.