You asked how I might compare the Delta to the Euro-Tek, but I don't care for the basic Euro-Tek and will compare it with the Euro-Tek Pro, using the same standard 8" coil.
Well, they are different, for the most part. Both provide turn-on-and-go simplicity, meaning they rely on a factory preset Ground Balance. Thus, that adjustment is eliminated for the consumer.
I've been in touch with several people around the country who have had experience wit the Delta, then acquired the Euro-Tek Pro, and after putting in ample time to compare the in-field performance, most of their opinions or conclusions are close to those I ended up with, and that is:
The Delta is a very good basic Coin Hunting detector that is geared for the entry-level hobbyists. It is a simple, get-started detector with segmented range Discrimination, and has the traditional type of Target ID most US coin hunters enjoy. The 'plus' features it offers, those being the two All Metal mode choices and the Mini-Jack to compliment the standard