Back-plane stacking vs Front plane stacking

So im having this discussion with a fellow engineer trying to decide what kind of stacking would be the best for a project

Context im suggesting using the new 6300 series with

Aruba 6300M 24-port SFP+ and 4-port SFP56 Switch (JL658A)

• 24x 1G/10G SFP+ ports
• 4x 1/10/25/50G SFP ports

he is arguing the back-plane stacked 3810 is more stable and gives better HA

3810M 24SFP+ 250W Switch (JL430A)

• 24 SFP+ fixed 1000/10000 SFP+ ports;
  

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i just need to fact check my arguments the Key focus is having HA in the event one switch goes bad.

We cannot do a ECMP design due to unknown reasons, they wanna keep the current Collapsed core design.

back-plane stacking

Pros

• Can reboot individual switches with minimal interruptions (Depends on the topology)
• Easily replace a switch with minimal configs
• Simplified management and provisioning
• 80 gig stacking bandwidth between the switches

Cons

• Older SKU (Still not EOL)
• Back plane stacked switches wont give you the HA the way you think it would, both share the same control, management and Data planes. if there is a crash or a software related issue it will effect both.
• Another module that can fail (rare but happens)

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Front plane stacking

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Pros

• Can reboot individual switches with minimal interruptions (Depends on the topology)
• independent control, Data planes, GW fail-over with VRRP
• Simplified management and provisioning
• New Aruba CX OS
• More flexibility with Switch placement in racks (Not restricted by the stack cable length)

Cons

• replacing a switch is a little bit more involved but can be template'd out using a playbook
• Lower stacking bandwidth compared to back-plane stacking (not a huge deal breaker based on the traffic patterns)

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What do yall think am i on the right path if else what am i missing?