Sheraton Lai Lai is "loosly" comparable (size and probably price), but just a tad below the Regent, Ritz, Grand Hyatt and Hilton.

As I recall there was no towers section there (SLL), I think! It is actually closer to the city center if that is important. If I'm not mistaken, they actually have/used to have a "ladies floor!" It may have been recently remodeled as well.

The Westin may be a good choice to consider too! Especially if it is open for six months prior to your visit!