Ok, I am real honest and critical with my reviews.
If you want something with a readout then the Deus is a definite candidate, although it is more designed as a sound machine. What I mean by this is it is designed to be listened to more than looked at. 2 issues that I can think of is that they seem to be a little sensitive to EMI unlike some of the other brands/models and it isn't as rugged as you Tesoro, although they are tough machines if you take care of the module and remote. Sensitivity isn't really an issue if you detect in rural areas such as fields.
Strengths are the 9" coil is a fairly deep detector and it is probably the most sensitive detector I've used. Along with the compactness and light weight.
I dug a wheat penny in a field a few months ago that was at least 10-11 inches deep, although I was using the 13" coil. What surprised me was we had missed it I am sure a bunch of times with other machines because the particular area was gridded over numerous times in the past. I was able to just hear it and then I tweaked up the audio and cleaned the signal up enough to get a pinpoint.
I get about 15-18 hours before I charge the batteries. I feel it can run probably 24 hours. In 2 years I've only run the battery out twice and this was after 20+ hours of use. Seems like the coil will go out before the remote or module will.
The book is the Andy Sabisch book. Google it. I honestly was overwhelmed by the book (I've had it twice), but I went to the XP website and watched the videos which helped me immensely and I really started to love this machine after 6 months.