Actually, as I am currently using this Voyager set on my Schwimmwagen build, I have to say, that I'm not very satisfied and once for a while regret that I didn't choose Aber.
Some of the details are oversized, as some don't get together so well and couple of details are geometrically wrong. As I haven't used some bigger details, like windshield, or roof frame yet, I do not have complete overview of the set though.
Also instructions are quite messy and confusing - some of the details are not shown there, so one would have to guess, where and how to use these.
Maybe such issues concern only this Voyager set, but in future, when choosing photoetch update for some model, I would definitely choose any alternative, but Voyager, if there's an option.