Cadence Slim Line Ported 10" Sub Box

[W0rp3D]

im looking at getting one of these http://www.cadencecaraudio.com.au/store/su...ported-box.html any one used one, did a bit of reading on ported V sealed enclosures and it seems that ported is probably better for me but these will leave me with over 2/3 of my boot space, also read that small ported enclosures are shit, would this be the case for something like this that isnt a shitty ebay job?