I have a 6.5X54 and I like it a lot. My load however is the old round nose 160 grain bullet, which is the one (either 156 or 160 grain) that made the cartridge famous.

I have made a lot of 6.5X55 Swedes in my life and I think VERY highly of the shell, but as of now I don't own one.

The Swede, the Creedmoor and the 260 Remington all have similar ballistics, with my old 6.5X54 coming in a bit behind them, but I don't care. I like my Mannlicher and when I carry it I feel no need for more speed or more power.
If I have need for more I step up to a 270, or my 300 mag.