@M.K. the reason it's hard to choose an answer is because it's an open question that doesn't have "one right answer". The SE people do no want these kinds of questions generally because they think they are for forums and that this is a Q&A site which they feel are totally different things.
@M.K. yes you can change your answer later. when i have asked some questions a bit like this i haven't accepted an answer, some answerers don't like this though because they are here mainly to build up "rep".
