Pattern Side Panels

Hi - apologies if this has been covered before - I did try to search and founds lots of reference to them - but not really an answer to my question, which is are they any good - what is the fit and quality like compared to original - my right hand one is damaged - and thinking of keeping it as it andd running a pattern one - which gives me the chance to see how the paint match will be (later silver) and decal quality etc without losing the (albeit damaged) originality of the current one.

Anyone used them - and which one ? - the LPM one any good for example  - their katana stuff is very good