The Burton Bike ones are OK, but the filler surround needs a LOT(not a little like they told me) of work to get a cap to fit, which is a pain if you buy a painted one. The paint finish is disappointing - the lining has two poor joins on the top. Mine arrived rusty but came with FREE Mombai sand inside - It is OK after a lot of work, but I wasn't thrilled with it at all.
Service wasn't great, told me I'd have to pay a penalty for sending it back - If I wasn't satisfied, but agreed on the phone that they can't actually do that. Worst bit was that we agreed they would fit the cap ( extra £45.00) to prove the fit - but of course they didn't and it didn't. Cap had no air hole in so bike broke down on first run - thanks lads.
On the positive side - fits well, doesn't leak, looks good, if you avoid close inspection of the paint, which of course all your friends immediately do!
I would definetly look for alternatives in the future. At half the price it would have been good, but a bit of a rip off at over £400.00 but hey that's the way it is these days, I suppose.