usb and pocket spectrum analyzers and network analyzers test?

[necessaryevil]

Dave,

How do you feel about reviewing some relatively cheap usb and pocket Spectrum Analyzers and VNAs? I think this could be interesting because 'real' SA's/VNA's don't fit in the budget of many hobbyists.

Examples:
DG8SAQ VNWA 3
PocketVNA
MiniVNA Tiny

And maybe even diy ones!
HForsten
YL3AKB