After Iraq trip....Amistad or Lake Austin?

I am returning from a year long tour in Iraq at the end of next month and I am wanting to plan a trip for 3-4 days. I will have an RV and my boat available and was just trying to get some opinions on which lake would be more fun to camp on with an RV and board on.

Lake Austin: i have been many times and usually take the RV to Emma Long Park. We put in, ride all day then at night we party, grill some food and drink beer. It has always been a good time but i am a little worried about the water level and the crowds. Last summer friends told me that the water level was really low.

Amistad: Awesome lake, but i have never been there with an RV. Is there any good places to stay that is still close to good riding water?

Any other suggestions. I have several friends throw out Trinity River, Marble Falls and a few others but i don't know.

I would like to keep it in the state of Texas and am really concerned with a nice place for the camp as well as nice riding water. Not too concerned w/ being near others or a party atmosphere because i will going with most of my friends. Any info would be great. Thanks guys.