At $68, I'd pick the LM assuming you're there as a visitor and don't need to be in any particular location for work. The Plat treatment is great, nice club, good suites, great buffet breakfast with a lot of variety. Downsides: KL Sentral is not the most appealing location, and getting to the monorail (which gets you to the area the Westin is located in a few minutes) involves a moderately hellish walk through and around a massive construction site.