FireLance
Legend
It seems to me that a paladin has four options when it comes to mounts:
(1) The "standard" option as stated in the PH. The mount gains abilities as normal.
(2) The "unusual mounts" option stated in the DMG p204, which looks like the DotF list. The mount gains abilities at a slower rate, similar to how the animal companions available for higher-level druids gain abilities more slowly.
(3) Use Leadership to attract a cohort to serve as a mount, as stated in DMG p205 and DMG p200. This option is open to all characters, not just paladins. If the paladin already has a special mount, he takes a -2 penalty to his Leadership score. The mount is a cohort, not a special mount - it does not gain abilities tied to the paladin's level.
(4) Use the Paladin Cohort Mount option on DMG p200. The cohort attracted by the paladin gains the abilities of a special mount of the paladin's level. This adds an additional +2 LA (minimum) to the cohort mount's ECL as it is more powerful than the cohort mount in option (3), but presumably the paladin does not take a -2 penalty to his Leadership score since the cohort is the special mount.
Options (2), (3) and (4) are of course subject to DM approval.
(1) The "standard" option as stated in the PH. The mount gains abilities as normal.
(2) The "unusual mounts" option stated in the DMG p204, which looks like the DotF list. The mount gains abilities at a slower rate, similar to how the animal companions available for higher-level druids gain abilities more slowly.
(3) Use Leadership to attract a cohort to serve as a mount, as stated in DMG p205 and DMG p200. This option is open to all characters, not just paladins. If the paladin already has a special mount, he takes a -2 penalty to his Leadership score. The mount is a cohort, not a special mount - it does not gain abilities tied to the paladin's level.
(4) Use the Paladin Cohort Mount option on DMG p200. The cohort attracted by the paladin gains the abilities of a special mount of the paladin's level. This adds an additional +2 LA (minimum) to the cohort mount's ECL as it is more powerful than the cohort mount in option (3), but presumably the paladin does not take a -2 penalty to his Leadership score since the cohort is the special mount.
Options (2), (3) and (4) are of course subject to DM approval.