Bit off topic but I had a similar experience with this company. I was consulted by their third party vendor and a Astaro tech rep. They told me oh yeah these 220's can handle the workload you are describing and we have these RED devices that can do exactly what you want (USA MIFI support).
Long story short, I now have two 220's that under perform, RED devices that I haven't been able to use since the purchase and now a support experience that was extremely poor and unprofessional.
I find myself sitting here waiting for the UTM 9 up2date hoping things will get better but the resource hog posts I've been seeing give me little hope.