I'm having loads of fun with 1.5
Frankly, I've had fun with each beta through 1.4 as well and it baffles me seeing people complain about having to 're-learn' the game each time it gets patched. There are a bunch of people who are unhappy with changes, and I can respect that. We all have different tastes, and as far as gaming communities go, the EUIV(and indeed, most Paradox games) communities tend to be much more literate and polite about their grievances than, say, the 13 year olds over on the forums for Call of Duty who are as likely to question your sexuality and make disparaging comments about your mother as to point out legitimate problems with a game.
So here's to Paradox for a great game, and for the community for not being infuriating, even when we disagree with them.