In your experience perhaps, but the other PA members who've been consistently successful nugget hunting with the 800 would disagree. The other PI gold detectors that you mention are certainly more capable of finding nuggets, but they're also much more expensive than an 800.Hi Willows
My advice to you is buy a gold detector if you want to find gold I own 800 with both coils and it is useless at finding gold. I have been on many trips with friends using a 8oo and cheap garretts and they never found any thing but rusty crap. where as the wife and I using sdc2300 or6000 found many small nuggets .any gold detector 4500 5000 will do the job .