I have used American Olean's Quarry Tile and it works great. Make sure to talk to your architect concerning the setting of the tiles while installing. We have a thin-set (opposed to a mud-set) and have had no broken tiles or issues.
Disadvantage of thin-set is that you have to get your slopes in with the concrete and not with the tile setting.
From experience my recommendation would be to stay away from concrete or epoxy. Concrete is too porous in a brewery, epoxy can be slippery and will wear quickly (a lot depends on installation). Epoxy with a granular addition to avoid slipping is not a good idea either as it is impossible to clean.
For installation in bottling lines, ask written guaranties from the manufacturer and installer.
Good luck!
BelgianBrewer
www.sbmbrew.com