Well, I wasn't Greek so I may not be the best person to give advice, but I say don't worry too much yet - you still have two parties to go. If you are still completely torn after that, I think you have a win-win, so pick one and don't look back. But read back over your own thread first and you may see the answer for yourself.
It sounds like things are going wonderfully for you and I can't wait to see where you end up!