probably 15% of romanian WG's are genuinely nice and give good service which might be me being generous, i've never punted with one but their reputation on here is enough to make me steer clear.
You seem to be after more of a GFE than a PSE and you will very rarely get that out of a romanian, most of them are being pimped out and have very little choice about who they see so they are often very jaded and sometimes nasty. Pimped ones also don't have any choice about what goes on their profile so likes and mentions of services.
Hungarian and Polish WG's tend to be more friendly though obviously there are exceptions as these aren't rules or anything, nothing anywhere saying if you are from x you must act in y manner.
Out of the bunch of links you provided the two (Michelle and Emily) with both all positive reviews on here and more than just a handful of reviews to show consistency are both Polish. Michelle seems to be on holiday so out of the bunch Emily would seem to be your best bet.