Which K frame would you use, given the choice?

I have only ever worked with the earlier style biscuit mounts and I'm not going to say they were "difficult" to work with but just by the LOOKS of the spool type, I would figure that the spool type would be easier to get the motor in and out. That being said, how often do you really plan on pulling the engine? As far as numbers matching goes, if everything else is going to be original or original looking then pick the K-member that matches your year for the picky onlookers at shows since that will still be visible under the hood.