I haven't been around for a while.... The HR44 pretty much shut me up. The sad thing is that I think even the C31 clients I have are faster than my HR24-500s now. I rarely touch anything than the HR44 which (fingers crossed) continues to speed through anything and everything. I've checked the C31s and HR24s off and on and either I've been spoiled by the HR44 or the HR24s are slower than used to be. I can't even imagine having to use the HR22s I used to have.
If you're in the need for speed - go with the HR44. If/when they allow me to get another I'll replace 1 or 2 HR24s with 2nd HR44.