I pity the fool who thinks a CA is better than an SR. This subject about CA vs. SR vs. KA is pretty pointless IMO, they're all good engines and have their own advantages and disadvantages. And I also heard the reason Nissan went from the CA to the SR was because the quality and parts were getting too expensive to produce so they "downgraded" to the SR.
If my car and engine were in good condition, personally I would go the turboed KA route, but since the previous owners took such sh*tty care of it, and since I was too impatient to look for a car in better condition and/or a better deal I must pay for it now. :\
If I could afford it, I would love to have a CA powered RPS13, S13 SR powered S13 coupe, keep my soon to be S14 SR powered S14

, and a turbo KA S14M/C. Can never have too many 240s is what I say.