I am getting a kit for many reasons.
1) the kit has proven a million times over to be perfect for a daily driver on a stock bottomend. Perfect fit and boost response on stock civic.
2) It costs alot less then _I_ could source second hand parts for, and i get alot less troubles that are asociated with second hand turbo parts. New parts would easily cost WAY more.
3) I get tunable management. Yes its not a hondata, BUT has once again, proven to be very effective for the boost i plan on running.
4) In the US, ppl daily boost 10-11psi, i am aware of our seonsors limits. hell i can get a GM 3-bar map sent over fromt he US for alot less the a factory sensor and use it with the e-manage boost harness. Regarless, i am running a stock motor, the 'effective' boost limit does not apply in my situation.
5) I can install everything myself, no labour costs, and i get to learn a whole heep in the meantime. I'm not a showmonky with a fat wallet, i like being involved. Everything the kit includes allows me to do this without the hassle (build time) and worries that i have forgotton something.
6) I have everything needed to tune the e-manage. This means i have an option of where i take my car to be tuned, if there was a hondata tuner in Sydney i would consider that option alot more (i could flog my e-manage and acc. off for $900+).

So they are basically my reasons to go for a kit.
I am still interested in honda/ecu chipping though, but what are my options with boost. DO i need a 'boost' enabled hondata - which start at something like 1000+, or can i just use it for A/F, ingnition, injectors through the base 200b unit?