I've done IOP and PHP multiple times in the last two years. When I went to the evening IOP I found it most helpful because they had a process group where we could just talk about what was going on and get support. That's what I find helpful. I don't need all the psychoeducation classes because I've been at this for years, I know that **** already. So it really depends on the program and how it's run for me. I will say that the PHP I went to when I was 19 basically saved my life because they helped me process through my dad's death and my neglected childhood.