I think for the money the miniVNA tiny and the pocketVNA are both pretty amazing!
I'd pick the pocketVNA, because it's about 100 EUR less than the miniVNA tiny, has a metal case, and specs seem kind of similar... possibly slightly better on the pocketVNA (and miniVNA doesn't have a lot of specs published on the site which I find offputting.
I guess, from here, I would speak with the pocketVNA manufacturer about what sort of deal they have for returns, and if that seems OK to you, buy it, run it through its paces in your lab, and see if you think it's worth the money yourself!