Realizing that a 10 rating is a friendly, but fictional and honorary perfection, qtractor is a fine achievement, and getting lots of improvements (the author has also released new instruments as well!). Linux as a DAW is very enjoyable, and easily acquired.
Studio 1337, AVLinux, KX studio add-ons, Remix-OS, Ubuntu Studio, Fedora CCRMA,
and quite a few others, have taken the configuration learning curve to new minimums,
and windows plugins are very usable, qtractor output can be easily summed with reaper,
festige, or dssi-vst output.
Those not subdued by piles of cash, might well get excellent performance using last-years computer,
in a fast RT linux, and discover some fine new software along the way. Yoshimi, rakarrack, and hydrogen,
and linux sampler, are getting updates, and make a solid core for composing using keys and guitars.
Burn a linux .iso to cd/DVD, or use unetbootin to easily install one on a usbstick. Reboot using early-boot menu