Hello, I have my Eagle Spectrum for 13 years now. I purchased it way back in 1993 when I started detecting, and it was the best choice that I could have made. It was White's top-of-the-line machine in the early 90's until the XLT came out in 1994.
Some Eagle Spectrum users will say it is the best White's machine ever made, and I have to agree. I use mine all the time, I'll never switch unless I can see for myself that something is better than the White's Eagle Spectrum. It gets great depth if you program it properly. I have gotten as much depth as 12 inches on large cents and pulled a 1773 Spanish real at 12 inches from hard packed soil.
White's don't make them anymore, however you can pick one up reasonable, they usually go for approx. $300 used, 400 tops in MINT condition.
Any questions, I'd be glad to help. I have all the manuals, and 2 books specifically for the Eagle Spectrum with custom programs, so ask away. Good luck...............Rich