I use a bottle jack and jack using the predetermined and marked jacked points on the vehicle. In Alberta, winter tires are a must, so swapping summers to winters and back again is a routine thing here.
Like this:
CRAFTSMANŽ/MD Bottle Jack - Sears - Sears Canada
The bottle jack easily jacks the X up and allows a real easy swap over. Be certain to torque to correct ft. lbs (101).