Yeah, even as I typed my initial message I realized that there was no way that I could paint it where a completely objective third party would look at it and say that we should stay together. It didn't feel good, but now that it's done, I think it may be for the best.
Another question on this topic... and I'll say it as much without bias as I can:
What would people think of students that gain some considerable rank (1st, 2nd, or 3rd kyu), who then leave their sensei and their dojo to train with another sensei at another dojo just across town because they like the teaching better? Should that sort of thing happen? Would you do it in that situation (where you have attained that rank and see another dojo that catches your interest)?