What is your favorite installment in the Heroes series?

I had a chance to play the third game for a bit, and I almost finished the fourth game completely. Just a few days ago, I managed to beat Biarra and complete the fifth game with all the expansions. Each game had its own pros and cons. In the fourth game, I especially remember the heroes who participated in the battles themselves. And their models were quite nice. But the most important thing is the game's structure: you could start any campaign without finishing the previous one. This is good if there's an insurmountable bug in a particular mission, and you clearly can't finish it. In the fifth game, there's definitely a sense of epic scale and a great story, but I still remember the first mission for the Light Elves, where you had to guard the border. There was a lot of discussion about it on the forum. I had to replay it five or six times, I think, until Biarra appeared and ran towards the Elven city – an obvious bug that many people encountered. At one point, it seemed like I was going to stop playing altogether, because you can't progress to the other missions without completing this one. If you ignore that, the fifth game seemed to me to be the most memorable and engaging.