Layer 2 or 3 for the access layer?

Hi

I'm currently designing a network and so far have a Juniper MX240 as the edge (layer 3), 2 x Arista DCS-7050S-64 as redundant aggregation (layer 3) and a single Juniper EX4200 TOR (access layer) per cabinet which are connected to each of the aggregation switches.

The network will use a VLAN per server being defined at the aggregation layer and trunked down to the TOR switches.

I am debating over whether it would be best to use layer 2 or 3 on the TOR switches. I believe one advantage of using layer 3 would be the failover and redundancy capabilities.

Does anyone have any view on whether using layer 3 would be a significant advantage over layer 2 for the TOR switches? What is the best way to manage the redundancy of the TOR switches to the aggregation?

Thanks