Personally, I'd go with Vasteel, because it rocks, but if you're not feeling it (i.e., not in the mood for it), then go for Neutopia: it's nice and simple and you'll appreciate it a lot more if you finish it before moving on to bigger and grander games like Tengai Makyo / Kabuki Den.
Do not listen to GUTS, he just doesn't like Vasteel.
If you do play Vasteel, you can choose to have PSG or Red Book sountrack, plus you should choose manual controls for the action sequences.