That does make your responses much more reasonable. I wouldn't be asking any of this for a Miata, which actually has good options.

 

I had BC BR's on my outback for 7 years of daily driving in the salt east coast. They still worked very well up till I sold the car (adjusting valving would still make a noticeable difference i.e. for roadtrips with the wife), survived the rust remarkably well too. Springs were a little rusty in spots but the bodies themselves and the hardware looked good.

 

Biggest trouble I had was trying to re-adjust the height on mine. Those MFers rusted on so damn hard. But you just put a can of WD40 on them starting on Friday night and by Sunday they are loose and only a few of your knuckles are cut up.

I think they've changed the design somehow so this isn't an issue anymore though. There are tons to choose from though. I don't see the point in limiting yourself to just BC or KW coilovers.