I'm currently planning on deploying a switch stack that would consist of the following switches:
2 x Catalyst 3750 12 SFP port switches
2 x Catalyst 3750X 48 10/100/1000 port switches
Cisco do claim that the 3750X is backwards compatible with the older 3750 platform, however it would seem that they run different software trains and this raises a few concerns.
I would be very grateful if anybody else has had experience mixing switches in the same stack from the two different platforms and more importantly if they have had any issues doing so.