For me the Arson High Flare is about 4-6 more boards overall than the Spike Black/Gold... the Black/Gold Spike is a weaker ball for the drier lane patterns.
I do not match up well with the Spike core with my game.
The AHF will be more angular down the lane than your IQ Tour, but might be very close to what you see overall on the lane. It's your call, but the AHF is a surprisingly good rolling ball.
Hope this helps...