usually teh "lite" versions refer to watches that would normally have a better movement inside, but instead they toss in a cheaper movement to cut down on cost. typically found in UPO's having an a21j inside but the buyer still gets a decent case set. not sure what movement they would throw in to replace the a64xx, but most likely it would be a non-swan neck regular asian copy... other panirists may have more detailed info....
i would also whole heartedly agree with the above statement that a good homage watch, with a solid case and checked movement would benefit you more in the long run, as you can upgrade it as you see fit to tinker later on... *which you undoubtedly will !!!*
Getat or Jackson will fill the Pam void for your first purchase, and are both very reliable in delivery...
then you can start ordering other Reps as you start to window shop and see what you do and don't like about the one you have... trust me, you will try many, and always find one you think is better in some way to justify getting it... the cycle continues!
am: