they can be adjusted as fast as you can jack up the car and work the wrench/your hands. Tein are where its at!
www.gropubuycenter.com
also JIC, they are awesome.
www.jdmhondaparts.com
but of course if you dont want to spend an assload.
Koni coilovers can be had for about $800 as well as APEXi World Sports coilovers.
or you can go the sleeved route and get some Ground Control coilovers w/ any kind of shocks youd like - i prefer Koni or KYB AGX. i myself do not like tokico very much.