My rather expensive 5 year old CFL downlights are fading, and one has failed, so it's time to replace all four with insulation cover rated LED downlights. The office is smallish, 4.5 x 2.5 meters, so I'm looking for a dimmer or dimmable LED downlight so it doesn't make it starkly bright. The ceiling cavity is quite small, there's just insulation framing and building paper before the roof, so I need something compact. I need insulation cover rating, and I'd like to keep costs down of course.

Mitre ten have the Ecolux LED downlight, no photo but it looks like this one. Has anyone tried them? There's no CRI on the web page. Price is pretty good at $34.

I have LED Lucci downlights from Lighting Direct in my bathroom. They look good, the light looks good, and they have a very wide angle so there's no hot spots. They don't sell that model any more, but that have the LEDLux Ciba which is probably similar, CRI of 84, 800LM, but $50 each. The infinity has a CRI of 90 but is quite a bit more expensive, $62, more than I want to pay. 

Lighting Plus have the 8W Lons with CRI of > 82 for $30, but 280lm is probably quite dim. Their 10W is 585LM, also quite dim, which suggests low efficiency. Probably why they're so cheap. I don't use these lights constantly so power use isn't an issue, unless they burn out or heat up the ceiling cavity. There's also this one, 11W and 650LM, which might work for my room - $33.

Lucci say "compatible with clipsal dimmers". Anyone know what they are, or what they cost?

Anyone have any of these with comments, or others I should consider? Probably going to buy today or on the weekend.

***** NOTE - the original question has been answered. The latest version is in the post "which dimmer should I get?"