[dsfyu404ed]

Compactness and cost must not part of "many measures" of "best"

Edit: Beat me to it on the compactness part.

[isostatic]

No idea about cost, but given they're under £1 each [0] it's not adding a lot.

[0] https://cpc.farnell.com/pro-elec/9518-5a-black/uk-mains-plug...