The best advice I can give you is visiting some alliances first, before making any decision that you might regret later. One of my members ateam4 already suggested this and with a good reason. He also visited us first and never regret his decision, he likes it very much with us, but like I said the decision is yours.
Figure out where you feel comfortable most and only then make your decision. Don’t let boosts or other seducements be the main reason why you join an alliance, main reason should be that you like the team and have a good feeling there. In my team all members behave like a virtual family, we are there for each other, during good and bad times.
During cooldown visitors are always welcome. So I give you the opportunity to figure out yourself if you like it or not and that’s the best advice I can give you.
You are important and you should feel happy.