If you guys had to do it all over again would you opt for the I4, the D9, or the D10? I am purchasing 5 bikes for me and my family and have all available for a good price. I worry a little about the I4 being discontinued, but I like the IGH idea (not sure exactly why). The D9 is a great price and the D10 even better, but I don't care for black of the D10.

Would you let me know what you'd do? I can get a combination (I4, D9, D10 if desired).

I rode the D10 and was impressed.

Also, is there any "must have" changes for you? I will go with SPD pedals for one.

I do not like the Kenda tires that come with it and would opt for a better and more flat resistant tire like a Schwalbe. Any suggestions here?