Buckets don't scratch that easily unless you abuse them. And I'll overlook blemishes. Used buckets benefit from an overnight caustic soak like PBW to get the stains and residual aroma out. I use sodium hydroxide but oxyclean also works well if used properly.
And another benefit is that I've drilled out a 1" hole in my fermenting buckets to allow a plastic spigot. Voila! No siphoning just gravity. I haven't siphoned once in five years.
Take care of your buckets and they'll take care of you.
Can you use a standard(green/yellow) with the rough(green) side to scrub them clean. And how high from the bottom of the bucket- say a six gallon one- would you center the hole for your spigots?