Thanks for the replies, it was probably a silly question because of course the ET can provide me with far more information than the iOSD mini and as you say Chris the display is very configurable (I have the whole ET kit, sensors and elogger v4). The only thing I find with the ET is that the fonts are a bit small and hard to read on a small 8" monitor.
PeteDee you have proved to me that it can work, the core does the same thing as the ET, only difference I can see is that the core presents less information than the ET is able to.
Again soler, Chris and PeteDee - thanks
Regards - bruce