I Wanna Buy A Dildo

I'm thinking to buy a dildo to break my cherry with it, because I'm a 30 year old virgin who feels really horny all the time.
I am a little scared because of the pain if it will hurt me in any way,but because there is no man in my life now wanting ro have sex with me I have no choice than buying a vibrator.
My question now is what model should I choose,there are so many, my dead God...
Please help me!