The drawers are nice and smooth. They're from the cheaper/smaller end of Beta's range, but I have no real complaints about quality or weight. I suppose I could criticise the plastic drawer pulls, but they're more than sturdy enough for home kit.
I paid far less than list for each component, so I think it's terrific for what I paid. If I had paid full pop I wouldn't be upset, but I might not love it quite as much if that makes sense.
I haven't looked too closely at the Halfords boxes, so I couldn't really compare (although I prefer having the extra drawers in the Beta), but I gather they're exceptional value -especially when they throw in the top box for free. I have thought about getting a few of the roller cabs to replace the shelves under my worktop, but I'd have a hard time convincing the Mrs that I really need the extra storage
The paper roll holder is a Beta accessory - I think I paid £17 for it. There's npot a lot to it though so it wouldn't be difficult to fab something up -especially if you don't need to match the orange paint