You need to break it up into three different parts.

1. The recessed can > any companies can will work, it's just a base for the light.

2. The LED light > There are alot of companies that claim that their bulbs are dimmable. Stick with quality companies and make sure they are compatable with #3.

3. Dimming control system > Lutron, Lutron, Lutron. Lutron has more engineers than all other lighting control companies combined. They have a wider range of products. Heck, they invinted dimming lights. See what brands and bulbs are controllable by whatever system you go with.