I can't help you much with availability in Europe, but here is the link to the manual on the USA seller's website. It does give the info for the EU importer on it. https://www.airtronics.net/index.php...aitfile_id/40/
As for electric power needing lighter airframe over nitro, that is no longer the case. All of my electric stuff, except the E-Flite PT-17e, are converted nitro designs, and all fly extremely well, if not better than when nitro powered. So your main choice factor between the two makers should be availability. The ESM version is more true to scale, and more detailed, from what I've read, but also costs more, so...
Good luck, and let us know which one you go with.