Beat it, great game.
The music is great, these games never let down on the Soundtrack.
The difficulty is on point, without overwhelming you.
Characters are an enjoyable bunch.
The main villain is kinda spooky, a disturbed individual that's for sure.
Case 4 falls just short of Case 5 from Game 3, but above Case 4 from Game 1(Shocking I know). But 4 is definitely one gigantic ride from beginning to end, took me about 8 hours to play through it. >_> And it brings the entire game together quite nicely as well as what's happened over the past 7 years.
If I had to rank it, I'd put Apollo Justice as a whole slightly behind Game 3, and above games 1 & 2. Hopefully Phoenix remains a pivotal figure in the game for any future installments, he's just too much fun to have on the screen at times, even when you're not playing as him in the courtroom.