5 GHz will have less interference, less range too I suspect.
If by "range" you mean the furthest it can go, there's not a lot in it with any of them. Fixed Tx power, fixed physics, same receiver sensitivity. You might get more sped at a given range closer in, but not at the limit of reception.
Phil
MaxDSL - goes as fast as it can and doesn't read the line checker first.
MaxDSL diagnostics
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