I don't think the tubular ones look right on a Disco, it's down to personal preference though.
Mine would be great, if my steering guard hadn't bent and tugged the tip of the right hand chassis rail down by 2mm. As a result the bumper doesn't sit level, attempts to elongate the holes and adjust it weren't successful. Still need to get around to taking it to a local fabricator and asking for his advice on how to sort it as neatly, solidly and cheaply as possible. It also sits too low, so I think new brackets may be needed. I won't be adding a winch until I've got it level and solidly bolted in, at present it only has one of the towbar-sized bolts installed as the other hole doesn't line up.