Blue Velvet is awesome...very durable and the beading lasts a LONG time...

Personally I would recommend...

Duragloss 101 shampoo
G-techniq P1 polish (hand or machine applied)
G-techniq C1
Blue Velvet

If you want to be a bit OTT like I will be on my next detail...

Zaino Z6 after the C1
Zaino Z2pro x 3 with Z6 inbetween each layer
Zaino Z8 x 2 slightly diluted