I like stuff I can check/calibrate myself and use for more than guns. Best part is taking a gunsmithing-lifestyle brand off the label halves the price. I use the following for grips and scopes:

Neiko 03727A 1/4-Inch Drive Beam Style Torque Wrench | 0-80 in/lb 0-9 Nm https://www.amazon.com/dp/B01FMXEWQC/ref=cm_sw_r_cp_api_glt_fabc_JRP5G8G0B3WXNDGAVBVJ?_encoding=UTF8&psc=1

and an adapter for driver bits:

Bit Adapter - 1/4" to 1/4" - Turn Any Ratchet Into a Driver! Now with Quick-Change By Pro Tools https://www.amazon.com/dp/B004DYKIH4/ref=cm_sw_r_cp_api_glt_fabc_CA1FFERVAQ6XATM9H7CS?_encoding=UTF8&psc=1

And this for barrel nuts and receiver extensions:

EPAuto 1/2-inch Drive Click Torque Wrench, 10~150 ft./lb., 13.6 ~ 203.5 N/m https://www.amazon.com/dp/B01M1D17AW/ref=cm_sw_r_cp_api_glt_fabc_G0XDSE7Y25CRB8RVZRZ8?_encoding=UTF8&psc=1