The standard fully synthetic 5w30 to VW spec. VW504.00/VW507.00 will do the job fine, even for a remapped car. If you do a lot track days then you could go for a 5w40 oil, but not really necessary in this country with our ambient temperatures.
Whichever brand you choose is personal choice, whether it be Castrol Edge, Mobil 1 ESP, Shell Ultra VSX or any other one.