On the contrary, I have had dealings with Dooby (the owner of Lobagola) numerous times over the past 10 years, and always found him to be a pleasant, honest, and helpful person.
He started out by operating a friendly, high-end hostel for riders in Zagreb, and has expanded into other related areas over the years - provision of insurance for non-European bikes, storage of motorcycles at his facility, and more recently operating tours. I don't have any experience with his tour operations, but his hostel is certainly a pleasant place to stay and he is efficient with provision and processing of insurance.
Here's a link to his website:
Lobagola Mototours.
Stefan Knopf offers similar services, but from a base in central Germany. I think that the choice between the two simply comes down to where you plan to ride (Balkans vs. Northern Europe) and where you plan to fly into (Croatia vs. Germany). Both operators - Lobagola & Knopf - are well-established businesses that have been around for many years and are well known by the regulars here on the HUBB.
Mototouring offers similar services from their base in Milan, Italy. I've used Mototouring in the past for insurance and for storage, they are competent.
IMT Touring offers similar services (rental, storage, tours, etc.) from their bases in Madrid and Malaga, Spain. I've used them for storage and they are very professional.
I think that Knopf offers some shipping services (consolidating a number of motorcycles into a container shipment between Europe and the USA a few times a year), I don't think that either Lobagola or Mototouring do shipping. But, for Canadian based riders, both Air Canada and WestJet offer 'individual' motorcycle shipping during the summer months between various Canadian airports & a choice of European destinations - it would probably be a lot simpler to check out those two airlines if you want to ship a moto between Canada & Europe and vice-versa.
Michael