[3.5] What abilities are best for a Psion

[RealMarkP]

I'm fairly new to psionics. I'm playing a Psion in a new campaign. All published WoTC books are kosher. I'm curious to know, out of all the special abilities in all the prestige classes a Psion qualifies for, which are the best and/or your favourite?

Your responses here will help me pick a flavour for my character. The campaign uses a point-buy system where I can pick and choose abilities from any base/prestige class that I qualify for. So I can be a Psion with Wild Surge (from Wilder) and Mind Blades (from Soul Knife).

I'm thinking of going the blaster and astral construct route.

[Fouredged Sword]

Constructors are powerful due to asteral construct. Diviners get some neat abilities that are very unique, Link Fate being one way to hurt ANYTHING that fails the will save. You can link someone's fate to a hamster and use a finishing attack with a scythe to deal a sure hit X4 critical.

[RealMarkP]

I've taken the route of the Shaper, which forbids me from Seer powers.