Open Question: Can I fully flash Verizon HTC Imagio, Eris or Samsung Omnia II to cricket Wireless?

I want to buy one of Verizon Phones like HTC Imagio, HTC Eris or Samsung Omnia II (I prefer this better b/c fast processor speed) and fully flash it to Cricket wireless. I was wondering if internet would be working on the telephone and other features as well.
What pda phone can be fully flashed better for the cricket?
Can these be fully flashed or are there some others that recommended for being fully flashed?
I don’t like Motorola(except last Droid phone), Blackberry and palm smartphones.
Your advice or a link, phone number would be very appreciated.

Thank you for your time

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