Updated for 1.26!
I really hate that EA tub with the raised design on the side. The tub is too fancy to fit in a minimalist/low-end bathroom, yet too tacky to look good among more ornate decor. I eventually got fed up with my own bitching about that tub and made a modified version.
My tub has a plain - smooth - design that will fit with any bathroom style. It has three channels: skirt/inner tub, pipes/knobs and top.
It is found under Plumbing -> Showers and Tubs for 450 simoleans.