Best readers?

[Armalite]

Looking for a good reader for my truck (96 psd). Nothing for performance just something to read and clear codes, buzz test injectors, and other things like that.
The OD light on my gear selector has been coming on for awhile and I was told that the tranny was throwing out codes. Looking for something that would be able to pull these codes. (None of the local shops can). And the regular OBII reader that I have for my other vehicles kills my truck when I try to use it.
If anyone has any good suggestions please post. Would love to keep it under $300-.
Thanks.

[BuickLeSabre1960]

Seems odd that none of your local shops can pull the codes, pretty much all of the generic scanners that the shops would have should do the job. But to your question, the AutoEnginuity seems to be a good system. I have not personally used it but the people I know that have it love it. I think it runs in the $400 range.

[JD3020]

I know my brothers friend that runs a performance/mechanic shop out of his garage has AutoEnginuity and he loves it. I've thought about saving up some money and getting my brother to go in halves to get it since we have 3 PSD's in our family, plus countless other trucks. Thats all i have ever heard of that your average person would have to do tests and scans.

[Armalite]

Thanks for all the replys so far. But im really just looking for something basic to pull engine and tranny codes. Its a 96 so I believe its obII, and it not a cali truck.
I was looking into the superchips 1705 on ebay but most are vin locked.