I'd suggest really researching the
ECU choice based on the end result/mods that you intend. No point purchasing the
ECU based only on budget and current mods - IMHO it would be the one thing really worth saving up to get the best possible choice for your car/mods.
http://members.iinet.net.au/~tuna/ECU%20matrix.gif
Thanks to Stace for this lil chart - it is a handy reference point for comparing the different units. Once you have a firm idea of what you want to achieve, see what people currently running something close to that setup are using for their
ECU.
Thats my 2¢.