Best eBike brands overall

Hey everyone!

I'm diving deeper into the eBike world and starting to think about my next upgrade, possibly even a DIY build down the line. I'm curious, in your experience, which eBike brands consistently stand out for overall quality, reliability, and perhaps most importantly for this section, their component availability and mod-friendliness? Are there any brands that just make it easier to swap parts, upgrade motors, or customize the battery setup without a huge headache? Looking forward to hearing your thoughts!