I like them both.
<span style="font-family: 'trebuchet ms', geneva;">And, as someone else said previously, it all depends on what I have to clean. If I'm only doing my rugs, it's a pretty safe bet that I'm going to grab an upright rather than bother with setting up one of the canisters. Occasionally, I'll grab one of my power nozzle or straight suction canisters to do rug cleaning, but mostly I reserve the power nozzle machines for when I'm giving the house a full clean (upholstery, floors, carpets, ceiling fans, central heating registers, and bathroom exhaust fans) and the straight suction canisters for in-between-cleanings jobs.</span>
<span style="font-family: 'trebuchet ms', geneva;">Bill W.</span>