I'm a big fan of Autoglym products. I bought a fair few products when repco had a 30% sale + free carry bag and sponge worth $30.
The ones I'd rate in particular are the Super Resin Polish and Extra Protection. It's a bit hard to notice the extra glossy finish on silver though but after about four weeks of under the sun and not being garaged, body panels are still glass smooth and beads beautifully. I'll be taking note of how long it'll last.
Their tyre shine is excellent. It's long lasting and won't attract dust. Just need to remember to wipe up the excess on the tyre or else it'll splatter near the rear of the wheel arches.
I've used their leather cleaner and leather conditioner and it has worked a charm on the interior. The cleaner definitely removes crappy grime build up on the leather and then the conditioner restores its softness.
The bumper and trim gel for exterior unpainted black plastics looks amazing when applied; however, after a few high pressure car washes it'll pretty much be off again. Not too overly impressed about that one. Good for car shows I guess lol