I'm happy with my Blitz, love the noise and glad to hear they are one of the best flowing filters.
But if those tests have been done legitimately, the Apexi is far superior - same price, highest performance gain, and best filtering. Doesnt seem right, high performance = high flow, but i thought better filtration would be a trade-off against flow rate. ie, cant have best performance and best filtration at the same time?!