Hold-up's ,for me , are a very benign medium of moderately horny adornment - a static band around the thigh with a bit of lace. Yes they feel nice and look good too , but after a few uses and washes the elastic will let you down and annoy you.
Suspenders and stockings , however , are a more organic thing entirely - moving and adjusting with the body's movements and stretching delightfully over your ass when bending over. The way they just pull up that little bit on the stocking is the sexiest sight and the overall effect is what I would call very fetching.