I'm sure this subject has been discussed before but there are so many treads I haven't found the answer yet. I have 7v steel Etecno now. I'm sure after this past winter there are fellow users who have tried both. Which is better.

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2006 KJ CRD AMSOIL Fluids, AMSOIL Oil Filter, AMSOIL ByPass Filter, Secondary Fuel Filter, Provent, Silicone Hoses, Rotomaster Turbo
2013 Audi A3 2.0 TDI Premium Plus
1948 T4 Willis Pickup
1993 C3500 Chevy 6.5 Turbo Diesel
1984 C7500 Chevy Flat Bed 366 gas
1987 R25 Chevy 350 gas

There are quite a few on this forum who have reported installing the 5v Bosch GP's and have reported no problems best that I can remember...
Many northern cold country members who have installed the 7v Etecno GP's on the other hand have reported mucho cold start issues with them...

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Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount
98 Dodge Cummins 24 Valve

i can't comment on bosh GP , but 7v e-technos , 1st batch that i install didn't last they burnt out one at time , second batch good didn't fail , but I was happy didn't have CEL any more , plugged in started ok , not plugged ,i left it and i jumped in my jetta , not plugged first crank starts smokes and my neighbour comes out complaining , diesel smell and noise , then i go to work end of story.

oh i forgot to mention that i purchase 3d set of 7v etecnos siting in my tool box just in case if needed (SPARE), my engine is like new and it's upgraded to our forum standards , but in order to start it in cold days with this GP it is not so easy with out help (PLUGGING IN) sorry we did go over this topic before , so let hear from 5 v group and their opinion. again this does not bother me because it is not my DD vehicle.