I'm just going to come out and say it. At this point, bugs and all, I actually prefer Goko. Last night, I played a couple games on Iso with AxeKnight, and I was struck by how much I really did prefer playing on Goko. On Iso, everything is cramped to one side, all the icons are miniscule. I kept missing that certain cards were in the kingdom - I didn't realize that Scrying Pool was in one until after I had trashed my Potion. I kept misclicking things - true, I had done this when first starting Goko, but... See, some players have lamented that on Goko you have to move your mouse around *so* much more to click everything, but honestly I prefer the space. It doesn't take *that* much more effort to move around the screen. But when everything is cramped to one side, it not only looks inferior, but kind of plays less well.
Now, this is no disrespect to dougz - I had some awesome times on iso when I first found online Dominion, but at this juncture I just think Goko is a better implementation.
This is not meant to incite anyone - I was myself kind of surprised at my own realization.
And this is not to say that Goko doesn't still have problems to fix - hoo boy it does - but as a platform, I prefer it over iso.