Switch Stacking or Router VRRP for Redundancy from Dual ISP

Hi Reddit,

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Currently trying to design a network diagram that allows for two ISP's with full redundant/fault-tolerant setup.

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Current implementation is using two Dell OS10 switches that uses VLT, or I can use Switch stacking, and this way I can plug ISP1 into top Switch A, and ISP2 into bottom Switch B. That way if ISP 1, or Switch B fails, the network continues to operate on the redundant pair.

I need to support two ISP's, two Routers or Switches for the ISP hand-off that feeds into two/dual Firewalls that support High Availability or active/passive fault tolerance.

I want to know what is the optimal solution. Using dual routers and VRRP? Or switches that support stacking and utilize LAG to achieve redundancy.

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I need to support 50 users, hopefully this paints a better picture.

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tl;dr - Switch Stack with LAGs, or Dual Routers with VRRP? Need to have total fault tolerance and redundant network setup to ensure uptime.