I've got Tein SS Coilovers. They're nice.

KYB AGX are one of the cheaper dampers.
Tokico Illuminas cost a little more.
Get dampers with adjustable stiffness.

Coilover sleeves:

HP Racing coilovers sleeves
Skunk2 coilover sleeves
Ground Control with Eibach springs coilover sleeves

For sway bars:

OEM Type-R sway bar with Beaks or that other reinforcement kit (sorry, I don't remember the name, bsq or something)

For strut bars, tie bars etc:

Spoon <-- expensive
Skunk2 <-- good price and quality
Comptech <-- rear sway bar/tie bar combo - no need for reinforcement kit
JIC <-- expensiver
Neuspeed <-- probably the cheapest but still good
Mugen <-- expensivest
Benen <-- carbon fiber is expensivester

I went with Spoon because I liked the simple look, although some companies probably make better strut bars. Neuspeed's front strut bar is good because it's one piece and has better mounting points. There's someone else who makes a good front strut bar similar to that. I think it's either Benen or JIC.

What car is this for?