I'm getting an SES soon read on my 06 3.0. I was thinking to buy a reader that would work on that car and my Z3 01 2.5. What is the best of the less expensive ones to buy these days just to check the codes?

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BMWCCA # 12660
14 GLK 350 M/B (hatefull POS gone)
05 CLK 500 AMG Cabrio
07 530xiT
09 Boxster