This is an entire discussion to itself, but since most of Houston isn't a population-dense city and home prices are still in check, it's hard to justify buying in a high rise unless you take into consideration the amenities(what's included in the maintenance fee) of most high-rises:
THESE are Avg's. Only
Landscaping: $25/month
Pool usage: $20/month
Workout facility (midscale w/privacy): $50 pp/month
Homeowners Insurance (but, renters insurance, $100/yr, is needed): $120/month
Standard Cable/Internet: $100/month
Water: $10
Total: $325
At some places, Electricity is also included, so go figure. It's not that bad of a deal at all, it's just all about what's included!