Looking to buy in Plugerville or Round rock

[Rama Mulpuri]

Hi, I have been on Biggerpockets and reading all the information i can get.

We are getting ready to buy our first out of state investment property and looking in Austin.

Looking for advise on which area is better, RR looks to be closer to the tech offices and some parts have great schools however 

Pflugerville is not too far either and schools are not abysmal like in proper Austin and the prices are lower. What is the Property tax diff between both these areas along with any hidden school taxes/Mello roos etc?

Are there any areas that are in the flood zone within these two places to avoid? Much appreciate all your advise and look forward to connect with Investor friendly realtors in Austin.