Again, I can tick off two thirds of these.
I rode Zeus twice on my only visit so far to Asterix in 2014. It's known for being inconsistent, even more so than Megafobia, and is allegedly great when on form. I don't remember it all that well, other than that on that day it was very much off form. In Cumbria they'd say it was rough as toast. A rough ride isn't necessarily a problem if it has redeeming qualities, but it had a distinct lack of airtime as well as seemingly polygonal wheels. The POV shows that the layout should be good, and perhaps one day I'll get it the way it can be, but if it's like the last time I'll ignore it for the rest of the day and enjoy Oz'Iris instead.
Fenix looks to be a typical wing coaster. I imagine it's probably fun for what it is, but nothing special.
Novgorod is a superb attraction, despite having a layout that doesn't do much. The punchy start with its double whammy of surprises on your first ride can overwhelm your impressions of the run to the vertical lift remarkably well. The return leg in the dark is fun, but again not very substantial. I'm amazed that I like it so much when I think about it like that.
Joris is the 'lots of little hops' type of GCI. It's fun while it lasts, but like John I've never thought it's much good. I far prefer the ones that have bigger, more defined hills and elements.
Monster gets my first vote, despite not having been on it. Walygator is generally poorly regarded, and Monster obviously isn't well presented, but this is a coaster poll and on a purely track and train basis it looks great. The section after the mid course br...um, where the MCBR should be looks almost too fast for the track profiling from on-ride, like my RCT3 attempts at inverts used to.
Working on my basis of judging rides against the competitors in their own group, Mir gets my other vote. Perhaps that sounds a bit odd when I tell you that it's not one of my favourites at EP and I wouldn't tend to do it more than twice a day while I'm there, but I think that's mostly because I find the spiral lift and faffing about around the top of the towers a bit drawn out. When you eventually get to that first drop, the proper ride is very good, coming across as a bit Schwarzkopf with sweeping curves and big dollops of positive force.