anyone diy blasted their car? if so what did use use?

i seen a few items

http://www.ebay.co.uk/itm/Shot-Sand-...c#ht_634wt_800

http://www.ebay.co.uk/itm/Sand-Blast...1#ht_916wt_800

http://www.ebay.co.uk/itm/Sealey-SB9...ht_1803wt_1034

any of those look decent?