Well, I like a man who cares about his appearance and everything and takes good care of himself and is nicely groomed, but I have to say a bit NO to the suit. I am a free spirited person and to me the whole suit and tie thing reminds me of days working corporate jobs where phoniness was the rule of the day. Not saying that men that dress in a suit and tie are phony at all - just that I kind of associate that type of dress with those miserable jobs from my past.
For me, I love a guy who is comfortable and free to be who he is - that is far more sexy than any article of clothing. Now a man in a tux now and then for special occasions is pretty hot though ;) My husband is most attractive when he's at home wearing jeans and a t-shirt - or a towel, he looks good wrapped in a towel too ;)