Arista Core Option Comparable to Cisco 9600

Currently researching core switch replacement options. First pick is the Cisco Catalyst 9600 with 40/100Gb and 10/25Gb line cards. We want to do our due diligence, so we're also considering Arista based on recommendations I've seen in this sub. We met with our Arista sales rep and SE today and were impressed with what they had to say, but wanted to confirm the accuracy of some of the info, as the devil is often in the details. Also, taking recommendations for an Arista switch that'd be comparable to the Cat 9600 mentioned above.

Wanting feedback on the following:

Non-impacting code upgrades. Is that right? We won't experience any impact to traffic forwarding when code is upgraded? This just doesn't seem right based on all my existing experience with other vendors.

Is there any support for full NetFlow? I only see support for SFlow.

Do you really get a hold of a Tier3 support rep right away when calling TAC? If so, how are the engineers?

The SE suggested both a chassis and non-chassis platform (7368X4). He mentioned the 7368X4 may be more cost effective, especially when needing to add ports since the modules are a different beast than line cards - no onboard ASIC, etc, they're really just ports on a card. Are there any cons or tradeoffs when choosing a non-chassis option like the 7368X4?

They showed us some graphs with occurrences of bugs and security events in comparison to other vendors. They were extremely low in comparison to others. Have you found that Arista has fewer bugs and security issues than other vendor platforms?

Any experience with CloudVision? Seems really nice, but not sure how much value it'd provide for one pair of core switches.

I understand the CLI is nearly identical to Cisco so configuration shouldn't be an issue. However, have you found troubleshooting to be any different? I often google networking problems we're having and it's often easy to find a cisco document or fellow networker that's solved/posted the fix. Not sure if that's the case with Arista.

Finally, any recommendations for a pair of Arista core switches based on the following requirements:

• < 30 10Gb ports
• < 10 40Gb ports
• < 10 100Gb ports
• Flexibility for other port speeds in the future like 25Gb
• Capable of redundant and hot-swappable components like sup, power supply, fans