The C3560CX-8XPD had been my first choice in the past. Now I would go with the CBS350-12NP-4X. With 4*SFP+ you can also connect the MX WAN-ports with DAC-cables instead of SFP+. And not using a Meraki Switch for the WAN switch removes the hassle with cloud-connectivity from the WAN-side to the internet.
... View more