I had calf problems last year coming back from illness, I have cheap compression socks from Aldi/Lidl and expensive calf guards (Compressport), they all helped and did the job equally well. Calf guards are more versatile and mean you can wear your own socks and get a few wears put of them. overall tho I probably preferred the feel of the socks as the compression effect extends down round the ankle and foot. I don't think there's much in it really and it's largely down to personal preference.