hmm well, some people would disagree that the neo 2.3 is a good chip. The reason why we advice you to get a new chip is for your benifit. The neo 2.3 is a swap modchip which gets boring after a while. A duo on the other hand is a direct boot modchip no swapping around and can boot 2 toc games like splinter cell and burnout 3 etc....
You may want to go to
www.alucard.cc to find a non solder swap patch this may help