I wanted to follow up here, as it seems info on track lighting is pretty scant on this forum.
Illuma is definitely good quality. Experimentation leads me to believe it will not suffer from deformation of the track when fittings are twisted into place. There are fewer mounting holes on the track than you might expect (three for 8 metres). I guess you could always drill extra holes in the track if you want to so long as you're careful. It seems Illuma wants the screws insulated from the track itself, so provides plastic inserts for their purpose-made holes. I guess counter-sunk fixings are not so good with these, should have tried a pan-head to avoid splitting:
The track is solid, and comes well packed. I went for the 8ft track length which doesn't flex much. The pendant light fitting Rocky suggested is easy to use, and well made, although when connecting it to a standard bayonet fitting from a ceiling rose there is a dilemma: It comes with an earth! Since most bayonets don't need/use one you can either re-wire the Iluma pendant, or re-wire your rose, doing something with the extraneous earth wire in the space that you have. I opted for the latter as the Illuma adapter looked harder to re-wire and the strain-relief looked rather purpose-made for the Illuma adapter cable size:
whereas my pendant had a more crude form of strain-relief that relied on some plastic jaws chomping together.
So that was the easy part. Then comes the nonsense.
Illuma provide a center-feed with a plate to cover the old ceiling rose position:
Unlike other center-feeds for other track systems there is NO space to do much with your existing ceiling rose wiring. So even if you just have the basic feed in, feed out and switch drop you will be struggling to make even that fit under the cover. So even though the implication is that this is great for dealing with an old ceiling rose replacement think again if it consists of anything beyond just a supply cable for the light fitting.
I think there are a few options on how to deal with this. Maintenance free Wago box shoved up through a hole in the ceiling is obviously one. Soldering/heat shrink would be another, if you're so inclined (and I think that's the option I may go for).
If you want to put a square back box in the ceiling as your JB, Illuma don't make this so easy for you as they put the center fixing hole for the track exactly in the center. (Where else would it go when there are three screw holes you might ask). The problem with this is that in the center is exactly where you want your JB so it can be hidden by the center feed cover.
Then there is the earthing. The fittings support three connections: live, neutral and earth:
Earth on a fitting just connects to a special area on the track free of any paint (and yes, it does slightly scratch it when it does this but it isn't very noticeable). So far so good for the fittings. However the center feed has no such earth connection:
It instead relies on a clamp pressed onto the top of the track with some spikes which scrape the paint away:
There's also a crimped-on earth lead. ON THE TOP OF THE CLAMP:
What this means is that the top of the track is no longer flat against the ceiling at the point of the center feed, but a good 6-7mm lower, creating potentially unsightly gap between ceiling and track at the mid-point. The solution is painfully simple: just grind away the PB above until the crimp gets recessed in its own channel and you can get it all to go flush. Or just put in a back-box, and then either put the track off-center so you can use the center screw-hole, or drill some more screw holes.
Finally, the earth clamp is also supposed to double-up as a center fixing. I suppose the idea is you screw your earth clamp to the ceiling, then offer up your track to it, pray you get the track in the correct position first time and then push it up between the spikes and hope you never have to move it again. It's about as horrible as it could be, when they could have just given a center feed with all three connections!
I still think Illuma are not a bad make, just didn't anticipate so many issues arising. I may contact them and see what they have to say about it.
