Well?
I’d like to phrase my answer within the common ranking system of my grade school days.
One night stand - Barbarino.
Boyfriend - Tribbiani.
Marry - Fonzarelli.
I love a guy whose name ends in a vowel.
D) None of the above
E) Death.
I would just like to express my indignation at the ommission of Joey Russo from this list!
[Joey Russo]
Whoah!
[/Joey Russo]
Fonzarellli. Travolta was a pretty boy and Tribbiani is a pretty boy actor. But The Fonz had some depth to him.
IRC, there isn’t even a contest. Travolta is a space alien Scientoligist who creeps me out, LeBlanc is a flash in the pan, but Henry Winkler is a top notch Hollywood producer.
What about Tony Banta?
I think I’m interpreting the question differently than others here, but I’ll still say the Fonz. I mean, he’s, well, he’s the Fonz. There’s just no beating that.
Barbarino, definitely. 
Well, aside from the coolness factor, the Fonz is the only one among the three who wasn’t dumber than dirt. So while he may not be the best-looking (to be honest, none of 'em floats my boat, lookswise), Arthur Fonzarelli’s my pick.
He’d also be my pick for less cerebral reasons. I can’t remember either Vinnie or Joey having much of a reputation in the sack, other than having many partners. Indeed, Joey had to be taught to “be there for her.” OTOH, the ladies who were fond of Fonzi seemed to melt in awe of his prowess. Remember, he could start a jukebox with a mere tap of his fist. What else could those expert magic hands do?
Second choice would be Joey. He’s a sweetie and would probably be fun for a laugh or two.
Barbarino? No. Give me Freddie “Boom Boom” Washington any day!
No mention of Nick Tortelli? The man who had the power to make women melt?
(Cheers-----Carla’s ex)
Whut?
Wheah?
Or, as Carla said, “Tortelli men draw women like flies, treat women like flies, and their brains are in their flies.”
The Fonz.
For a reason so embarrassing and stupid that the skin on my memory is crawling! I need therapy!
A variation upon The world’s most deadliest…'s theme:
Sleep with: Barbarino
Live with: Fonzarelli
Kill: Tribbiani
Really? You’d marry a guy who sleeps with umpteen women a week and whose entire catchphrase is “Aaaaaaaay!”?
Now, now. That’s not fair.
He also says “Sit on it!”