The Magus is what got me to first make the switch, though it was actually Dreamscarred Press' third-party content that got me hooked. I love how they've built upon and improved the ideas behind some of 3.X's alternate magic systems. Their Psionic classes alone have enough variety that you can...
Another thing to remember (that my group neglected while starting out) is that you should have bonus spells per day from whatever ability score your class uses for casting spells.
But yeah. Anything with a full spellcasting progression in Pathfinder is already incredibly powerful. Removing...