guidance to select arduino board.

Hello Guys.

I am doing my project on android based home automation.
I need your help to choose a suitable arduino board for interfacing with home appliances and android application.please help me guys to make right choice..

If you have to ask the question, there is only one answer - a Mega 2560. It is an Arduino in the understood and conventional form but the biggest of its kind, which means there is less chance of outgrowing it than outgrowing a Uno. The chances of oputgrowing a Uno are actually quite good, and you can get a Mega for just a few dollars more.

A Uno may suffice for your needs, but you do ask the question....

Mega 2560 without any hesitation

And a screw terminal shield for connecting things up solidly.
http://www.crossroadsfencing.com/BobuinoRev17/