Bimmeroem.com vs GSRTechnik for DPF delete?

[Dr. Anthony]

Hey guys, I'm looking to do the DPF/EGR delete on my X5. Prior to having the X5, I never heard of either (My other BMW is an M3 and a 535)

Has anyone heard of anything positive or negative about either of these guys? Before I send a couple grand away, I'd like to make sure I'm getting what I expect and have the post-sale service attached

Thanks!

[bawareca]

I also offer this service and my kit will be not only DPF delete pipe, but complete kit with EGR plug for the exhaust side, EGR actuator delete housing, caps for the coolant lines and so on.