There are many populated High Rates out there, I could recommend some but that'd cause me a ban. ;p
And yeah, they aren't as fun as lowrates. Lowrates take time and efford to get decent geared, on your journey you get to know people/friends which makes you want to stay. On a High Rate you're on your own, 99.9% of the community is pinoy and doesn't speak one word English (not that I have some grudge against Pinoys, but it isn't really pleasant to be the only one that talks english, unless if you're Pinoy yourself, ofcourse...) and, not forget to mention, you'll be bored fast.