The ones I originally bought were not fit for purpose and the beam pattern was so far off that I never even left them in long enough to try them out on the road.
I bought another set which look very similar to the ones you link to above - but I bought mine direct from Hong Kong as they were a bit cheaper, and slightly brighter again.
I did a test fit, and the beam pattern is a lot better, but not quite exact replica of H4 Halogen beam pattern, from when I tested them on the bench.
I keep meaning to find a proper time to install them in the RR and point them at a wall/white garage door and see what they actually look like compared to the standard halogens. I did briefly try them on the road but the RH one was out of alignment, so I pulled them back out and put it in the too hard basket... after doing that I realised that I had preset the alignment of both lamps on the bench in a LH housing, and typically after I'd removed the LH one from the vehicle, found that twisting the RH one aligned it better...
By then I was 'over it' and gave up as I had other things to do and it was getting late! But I do believe after thinking about it more since then, that even though the spread is not 100% that of H4 Halogens - if I took the time to park it up against a proper surface and fiddle with them a bit more, I could get them lined up to a point where the cutoff on the RHS will not dazzle other drivers, unlike the first set I bought would have.
Also given how badly a lot of other vehicles headlights seem to be aligned, and how much dazzle I seem to get even in the higher position in the RR from some other vehicles that have been driving towards me before - I think that the LED cutoff is a lot sharper, so even if it's not perfect - it will still be good enough to not spray light everywhere into the wrong side of the road.
The verdict for me will obviously be once I've had the chance to fit and line them up properly! but the ones you link to do look like they are the best to go for at the moment! I think the second set I bought which are the same design but different colour (physically, not light output!) were about £10 cheaper - but I had to wait 3 weeks for them to arrive from the East!