There are not many companies than make shocks and struts.
Tenneco makes the Monroe and Rancho as well as many OEM shocks. That does not mean they are all good or all bad.
Occasionally Sears runs a promotion of free shock installation with purchase. I took advantage of that a few years ago when I bought Rancho RS9000x for my last truck and paid about $10 more per shock that the best web prices at the time, but free installation. Do it right, get the better shocks. You won't remember the extra $100 very long, but the ride will be reminded every time you drive.
