Five beer and each one a completely different style.
Starting off with Thwaites double century from the UK. It is as good as any English pale ale/bitter but there is not a whole lot going on. Perhaps some mandarin and a nice bitter finish. Not a bad beer at all and I enjoyed it. Beer does not have to be exciting to be good, it just needs to show quality which this does.
Goose Island is a US brewer I love and their Demolition Belgian style golden ale. It came across as a little sour, like lemons. There was a little spice and rather hoppy for a Belgian style ale. I enjoyed it but considering the Belgian alternatives available, it is not worth the hefty price of US imported beer in Ireland. I am sure this goes down a little better in the US where it is more reasonably priced and perhaps Belgian imported beers are more expensive.
Cains Double Bock is interesting only in that Cains is an English brewery. As a beer in its own right its quite nice with fruity notes, perhaps cherry and some chocolate. It was quite carbonated too. I would not say it is up to German bock standards but it was enjoyable all the same.
River Horse has a brewers reserve series and this is their hefe ryzen which is a wheat beer with rye in it. It was incredibly yeasty, lots of banana and very carbonated. I handed it over to my wife. I thought it was refreshing but again, very bland.
And finally brewdog is always up to something interesting but their 77 lager is bound to be bland. As lagers go, this was quite nice and refreshing with a little bit of lemon possibly grapefruit citrus bite. Malty/biscuity and just plain nice. I think I prefer Brooklyn lager but it was possibly the most interesting of the 5 beers.