Gmat Cat tests

[dsk02]

I have about 1 and a half month to go for my GMAT. I have already given
2 kaplan tests and PP1.
I have 800 score tests . Can I really trust these tests ? I just want some practise so that I am comfortable with my timing stratergy.

I plan to give 5 more tests (PP2 and 4 others). Can someone suggest some good tests other than PP.
Manhattan CAT ?
or
Princeton ?
or
800 score.

thanks a ton

[dsk02]

anyone ?