156s are great cars if you get a good one. Get a bad one and it will have your heart scalded. I know this from experience (i'm on my 3rd 156). Make sure you have service history and the oil is topped up an a twinspark. They do not take kindly to being left run low on oil. Also listen for suspension knocks and make sur eit has had a timing belt done in it's lifetime.
If you are going for a V6 (i would advise it
) make sure it has had the waterpump and all the idlers and tensioners done as well. Don;t take peoples word on this. Phone garages etc and ask them. You will love Alfas after coming form that german appliance you had before.
If you need any help just ask on here. Everyone is sound.