Hi I'm looking to get some kettlebells for home as I use them a fair bit at the gym. Now undoubtedly some out there are just sand filled pieces of shit whilst others are nicely coated solid steel.

Is is it worth the time to slowly build up a nice collection of something like http://www.powerhouse-fitness.co.uk/...FafItAoduTMApg or should I gamble on something like these http://www.ebay.co.uk/itm/2-4-6-8-10...25.m3641.l6368 which seem incredibly cheap