The
support for Kobo Glo HD was just added in the current nightly build. The main attraction for that reader is the 300dpi display, although some like the 6" size. The Voyage that you have seems to be much the same. Have you tried Koreader on your Voyage? I don't have a Kindle, so I am only going by the install description and, to me, it looks like the Kindle install process would be considerably harder than
the process to install KSM & Koreader.
Koreader is using Sidecar (.sdr) files, like used with Kindles. Then there is the
Evernote Plugin.
Luck;
Ken