Actually, I did try Scaleway when I saw them on HN like 9 months ago! I recompiled a Go program I was working on [1] for ARM and benched it against Linode.
It was literally 10x slower than Linode even after playing around with Go's concurrency level to find the fastest runtime, and even with the dataset in memory. :( ARM just wasn't the right arch for what I was doing.
I ended up going with Vultr because it has the $5 pricepoint for hosting tiny websites and tons of datacenter locations. Their CPU performance and network speed were great in my tests.
I've recently switched from DO to Scaleway and would never go back.