I thought so and I got it. I like it as it gives you more details over the standard interface. Go for it!!! I think you will find that the Buzz Test is worth it alone.
its really worthless w/out the enhanced data...w/out it you wont
be able to do any diagnostics (just read and clear codes)...and you
WONT be able to test any components...like injectors, glow plugs or
EGR...