I played a bit of all except alter code F because it never came out in the EU.
Wild Arms 3 is my favorite because of the art style. They changed the combat system for 4 and 5. To be honest, it didnt bother me, but i didnt see a need for it either.
With that said, Wild Arms 5 did seem pretty good aswell, even though i never had the chance to play it properly.
Wild arms 1 was a bit of a joke. It came off a bit before FF7, so it profited from that hype and lack of anything better, but it was horrible with those Big headed models. WA2 was ok. WA4 was a waste of potencial, like they had lost all funding after WA3. They revamped the combat, lost the cell-shaded look and lost the cut-scenes for a poor 2D presentation. It wasnt terrible, but it was definitly a step back.
I definitly think it was a mistake to lose the cell-shaded presentation after 3. It was a perfect fit for the series.
Thinking about it... it would be awesome if Sony made an HD collection of the PS2 games for the Vita (personally i would like for it to have Alter code F, Wlid arms 3 and wild arms 5). We can only hope. :(
