How does the upcoming Quad Cortex compare? Does it use the modeling or snapshot approach? From reading the website a while back it seemed to be the snapshot approach but it wasn't clear. Any ideas?in my opinion use Kemper ONLY if you have used certain real amps and you know exactly what type of sound and know how to dial these specific amps to get that exact tone. If you want to experiment with different amps then go for a modeller like the fm3 or the helix.