I really like Jonathan, and Jeremy is very nice too. I cannot stand Justin, it's the ultimate little brat from the eighties name. Not fond of Julian either (wimpy) and Jasper (just sounds ugly.) I'd change those three to James, Jesse and Josiah.
Before you criticize a man, walk a mile in his shoes. That way, when you criticize him, you're a mile away and you have his shoes!
Steve Martin