Can't believe I never replied in here.. then again I spend way not enough time on AnimeSuki..
I too like Tomorrow, Sore ga ai deshou, and Minamikaze. Instrumental-wise, Plan 1056 is one of my favorites (especially in its use on the final FMP! episode to open it - the crescendo as the FMP logo is coming up is quite powerful IMO). As well, the previously-mentioned, seemingly-untitled-and-unavailable piece that backs the sunrise in Hong Kong in the final TSR ep when Kaname is (done) talking to Sousuke.
On a related note - I know all three titles are sung by Shimokawa Mikuni, but Minamikaze always sounds different to me, maybe because of the lower parts that start it out. I could envision Kaname singing Tomorrow and Sore ga ai deshou, but I always picture Minamikaze coming from the more mature Melissa Mao.
