Coil spring replacement ???

[DANTIP]

I am looking for feedback on the quality of coil springs available from suppliers. ECE, LMC and others sell coil springs and I have also found NOS springs (pricey!).

I want the correct ride height and quality but I don't want to spend more $$ than I must in order to get parts that work and look right. If all springs are created equal, price will rule, however if others have had problems or concerns using parts or suppliers I want to know what to avoid.

Thanks!