I use two 2-ton jackstands I bought at autozone and a 2.5 ton hydraulic jack. Most important is the jack to make sure it is sturdy and has a wider base to prevent tipping. I dont use air tools so sometimes I am applying a lot of sustained torque to break bolts loose, and some jacks can be scary. Same goes for jackstands make sure they have a wide base and are sturdy, shouldnt have to spend a lot tho.
For emergency backup when working under the car with the wheels off, Ill slide the dismounted tires and wheels under the floorpans of the car. Shouldnt need to tho as long as you never rely on a jack alone, just to put it on jackstands.