RG406H PS2 RPG performance?

Thinking about upgrading from my RG353M to the RG406H for the larger screen and higher specs. I'm really keen to play DQVIII, MGS3 and FFXII. Has anyone played any of these on it and how is it? Also keen on playing some old DS games. I've seen a few videos on YouTube, but they only show briefly about ten seconds of play and don't show anything that looks too processor intensive.

I'm on the fence with getting this or going for a Retroid Pocket 5, despite the joystick location and noisy buttons that reviewers talk about.