They're so damn cheap and generic I wouldn't worry too much about the prospect of having to replace occasionally in the future.

We got a dimmable version of these: 

https://www.lightingdirect.co.nz/shop/Downlight+Lights/LED+Downlights/LEDlux+INFINITY+MAXI+1+WW+900LM+ROUND+WHITE/x_sku/16602.html

About two years ago, and they're still available. Back when we bought them, the trade price was $54... now the retail price is $38!

If your going to get a sparky in to wire them in its more cost effective long term is to go with bubble plugs in the roof. This way you wont need to call them out to change a fitting.

Buy common sized LED down-lights ones so in the future you can swap them out yourself. A couple of spares is also handy.

kiwijunglist: @finewine are u in Wellington. Can you hook me up with same deal. Would want about 10x lights

Ideal Electrical (Taupo) were having them on sale so plus the trade price = $20ea. Check Ideal Electrical Wellington to see if they also have them on sale.

shrub: If your going to get a sparky in to wire them in its more cost effective long term is to go with bubble plugs in the roof. This way you wont need to call them out to change a fitting.

The Robus Taylor LED Downlight Taylor 10W CCT have a 4 x snap-in connector block with snap shut cover - all very easy.

shrub: Buy common sized LED down-lights ones so in the future you can swap them out yourself. A couple of spares is also handy.

My problem was with the existing hole size - 127mm - though the new fittings stated 125mm hole size it was just way too loose and slipped out slightly. So we cut off the old internal dome from the old ceiling flange which left the old fittings flange in place and sat the new flange on top, all sweat. This added another 5 min's to a 10 min job per fitting. We also had 4 x 90mm which we had to enlarge those holes for the new larger fittings. My brother in-law had just done the same exercise and all of his previous fittings were 90mm. Learning the hard-way with the first fitting of 125mm cut out, which was too loose, he made all the other cut outs 122mm. So beware of retro fitting any flush ceilings lights - measure, measure and then measure.

Edit: forgot to say that the width of the new flange was slightly smaller than the old flange so when we took the first old fitting out entirely and was trying to fit the new fitting in, noticed that there was a ring of old ceiling paint around the outside of the new flange, so leaving the old flange in place solved that problem as well, did not have to repaint ceilings throughout house. So just be aware of that.