I will be going to Croatia again this August with World 4x4 Adventures ( http://www.world4x4.co.uk/ ) I've been there before in 2008, Robb Pritchard, the organiser, is a good bloke, we got on very well, and Croatia is a gorgeous country, beautiful views and you get to drive through a minefield! most of the tracks we covered before were not too severe, so could be good for less experienced off-roaders, I'm looking forward to doing it again