johnnype |
People like the Malhavock psionics books because they are written by Bruce Cordell, the same person who wrote the official WotC XPH and therefore the rules are 100% compatible. Keep in mind that you only need to purchase Hyperconscious. It's a compilation and update of all the material previously published by Malhavock. I should also mention that it's very cool as well.
As far as the Psychic's Handbook is concerned, it's also worth checking out. It's written by Steve Kenson (Mutants & Masterminds) and presents a different and alternate system to the one presented in the XPH. It's similar in some ways to D20 Star Wars force rules in that instead of points and powers it's all done with feats and skills. The system is much simpler if a little weaker in power. It presents a new core class, the psychic (I think) and some alternate material for using it in D20 modern games as well.The rules show up again, in their entirety, in Green Ronin's Advanced Gamemaster's Guide (sans D20 modern material) so you might consider picking that up instead and getting the other unrelated extra material as well.
In the end you could concievably use both systems in the same game if you like although you would need to keep the classes and rules systems separate. You could use it to flavor your campaign and say that the Psychic HB system is native to only a specific area of your setting and the WotC material is "normal" everywhere else. Both systems are good but very different.