Shari,
Sorry I didn't respond to your questions. I've been in Vegas for two weeks wrapping up a couple purchases and I've not been on the computer much. Others seemed to have answered your questions, but I'll also add a little of my own opinion.
We just purchased two Summerlin homes. BEST area in Vegas (IMO). Buyers and renters seek this area for high quality schools and a quiet family community. Terrific shopping, golf courses, restaurants, etc, without all the hustle bustle of most other parts of Vegas. We're actually considering retiring here. We just love it!
Don't worry too much about the HOA & SID. It's the strict HOA that keeps Summerlin beautiful. And I do mean strict! With all the foreclosures & distressed homeowners, neighborhoods would start looking pretty bad if the HOA didn't step in. They site properties that need landscape or exterior maintenance and the banks usually take care of the violations when they take over a property. If not, the new owner must do so in a timely fashion.
We've noticed that rents in Vegas are quite low on medium to large size homes. You can rent a 3000 sq ft house in Summerlin for approx $1800-1900. Now what's hard to understand is why condos/townhomes with approx 1100-1200 sq ft are renting for approx $900 a month (of course this depends on area too). Many Vegas condos are selling for 40-60k, so not a bad return for buy and hold.
We spent ALOT of time doing research in Vegas before buying. Also, my brother has lived there for 25 yrs and is in construction, so he has a bundle of knowledge regarding specific communities, crime areas, etc, etc. Yes, it's a hot market there right now, but still a good place to invest. JUST DO YOUR HOMEWORK AND FIND A GOOD REALTOR THAT UNDERSTANDS YOUR NEEDS.
Sorry again for the delayed response. Good luck to you.