The fewer leg sections a tripod has the more stable a tripod will be.
4 leg sections is the least stable and because the bottom 4th section has to be so small, load capacity is also compromised.
3 leg sections is more stable and usually allows a larger max load, because the smallest leg section is larger than 4 leg sections for the same tripod.
2 leg sections is more stable still but versatility begins to suffer.
So 3 leg sections usually makes a good compromise.
Manfrotto and their triangluar, non-rotatable center column, only having 2 padded legs, loose my business.
I recommend Giottos tripods like this one
Giottos MTL9251B Classic 3-Section Aluminum Tripod with Flip Leg Locks