SR20 Turbo vs SR20 N/A

[gtivr4]

I am moving to New Zealand and the Silvia is one car on my list of things to look at, but I am curious as to the differences between the Turbo and naturally aspriated models. The S13 I believe came with the SR20 in both forms, but thats about all I know. I am curious as to how different the two cars are. I don't care so much about outright power (otherwise why would I ask!), and cost would be a big issue (thus looking at early 90s cars).

Anyone happen to have driven both or have some reviews comparing the two?

Thanks!