It depends what you want.
If you want to be buying something that someone has lovingly built, designed for speed and agility and looks stylish then buy a Robin.
If you want to buy a airborne Cortina that's up to you but don't blame us when you look enviously at the smooth guy as he pulls up at the clubhouse in his DR400.
DR400 = Wiener Schnitzel
PA28 = McDonalds burger patty
DR400 = Gin & Tonic
PA28 = Pernod and lucozade
DR400 = Cuban Havana
PA28 = Benson and Hedges
DR400 = Dom Perignon Brut
PA28 = Babycham
DR400 = Portugal FC
PA28 = England FC
DR400 = Goodwood
PA28 = Panshanger
DR400 = Eton
PA28 = Grange Hill
DR400 = Princess Stephanie
PA28 = Bet Lynch
Need I go further?