I owned an XLT and the Eagle Spectrum at one time. Yes the XLT has some advantages. The faster processor, the newer battery style, smaller lighter electronics box and it does not lose programs when the battery has been removed for a period of time. I can tell you for a fact I liked the Eagle Spectrum better. The coin sounds had a much nicer rolling sound to them and for every place I detected here in Indiana, the Eagle's depth was also superior to the XLT.
I dug several dimes at a measured 13" with the Eagle Spectrum.On a regular basis I could outdo the XLT. But the maybe I just had more ground time with the Eagle?
Ground and field time is very important to learning the detector you own! Everyone developes a "feel" for what they have and use on a regular basis. Some detectorists outdo others with similar macines.
Practice, practice, practice.
I ended up selling the XLT and kept the Eagle. I also own the DFX300 and the V3i. The old Eagle just sits in the closet now, but it is a great machine!
This is all just my opinion based upon my experiences, yours might be better with the XLT, good luck!