Has anyone tried these before?
 

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Nope. I would stick with a better known brand if I were you.

Any suggestions...non Dinan?

I know its not what you want to hear, but I have only used DINAN other than once on my e60 5. I had a dms remap done that was great and local in Chicago and delivered as promised.

Conforti Shark Injector, then?

I have never know anyone to use them. Have you seen them in action? I have looked at them before just never tried them..

Conforti is well know and has a good reputation. You can buy Conforti from Bimmerworld and Turner Motorsports. Unfortunately, if you have a 4.4 like me, the pickings are slim. I don't think Conforti makes a Shark Injector for that engine, so I would say Dinan would be your best bet. If you have a 3.0, you can get Conforti.

I put a Conforti chip in my e36 325i years ago and have been pleased with it.

I would stick with Dinan or Conforti .. nothing else