We use them heavily for test boxes and running experiments. Standard off-the-shelf machines are provisioned almost instantly, and never had any problems.

More custom stuff (eg 100Gb/s NICs) takes a bit longer, but they've always been super responsive and quick to sort out any issues!

The price / performance you get from something like their AX162 is just crazy, although unfortunately with the whole RAM / NVMe shortage the setup fee has gone up quite a lot.