Chrome DevTools are great for troubleshooting bugs, broken elements on pages, styling issues, responsiveness, identifying performance issues, third-party connections for data privacy, reviewing cookies and local storage, screenshots in different dimensions. Chrome DevTools are for technical users, so you do need to have a decent understanding of some basics like HTML and CSS to get started using them.
I asked questions about a warm standby and multicast replication. We ended up using bi-directional replication and a warm standby db. Having 3 or more live OLTP DB's where each was read-write was going to be difficult to manage for contention if the same table was being updated. We stuck with an easier solution to have only two OLTP's, and then used additional DB's as read-only DW's.
As one delves into DevTools, one encounters a gradually steeper learning curve. You can do a lot very quickly, but to fully utilize DevTools takes time as one explores what it can do.
With many new updates, tools and items are moved, and a comfortable workflow becomes a frustrating search. This often happens when following only slightly outdated tutorials on a given feature, even in Google's own documentation.
The experimental flags, settings, and options are scattered about and a little clunky to configure when one has to make changes in multiple places.
While Chrome DevTools are very powerful, it's not the easiest thing to use, as there are so many different tools built in. It takes some exploring to discover all the options possible within DevTools, but with a little exploring, the DevTools become a very powerful asset. Accessing the basic HTML and CSS inspection is very easy though, and that's the most common usage for the DevTools.
I'm not entirely sure what to rate the support for DevTools, because I don't have any experience dealing with official customer support for DevTools. I would guess the primary support for DevTools would be in a Chrome forum. Typically if I have a question or issue, I am able to find an answer from doing a quick Google search. It's pretty widely used, so it's not difficult to find answers.
SAP support has been outstanding. They have quick response times and always meet their SLAs. Any time we have an issue that needs to be researched they are able to get back to us quickly with resolution.
I find them pretty much the same, they have the same tools except Firefox doesn't provide the lighthouse functionality. I do prefer firefox's dark theme and colour palette. But I use Chrome Dev tools because of the Light house functionality that analyzes the page load and scores the website on desktop and mobile experience.