I've always enjoyed
Nicholas - even suggested it for our son, only to have DH veto it very firmly. He wouldn't, he said, send HIS son out into the world without underwear.
Perry? Like the long-ago fictional
DA, Mr
Mason? Or short for
Peregrine, which is way too posh for me to use but is still rather fun.
Perry alone is fizzy, slightly alcofrolic pear juice and quite amazingly nasty.
Rutherford? Nah.