Hi vinc64, thank you for your quick reply and a belated welcome to DC

It's alway GREAT to see developers on these boards discussing their programs.
LookDisk didn't return as many hits on a Filename search as did SearchGT and File Locator Pro. SearchGT doesn't search within files (ie text) and File Locator Pro's search within files feature is as slow as molasses.
I have a lot of files and folders with "neanderthal" in the name and tested all three applications with that as a search term. SearchGT returned 532 files in 10.7 seconds, FileLocator Pro 532 files in 11 seconds (only gives full seconds, so I *think* pretty much neck and neck with SearchGT) and LookDisk returned only 387 "hits" in a much longer period of time. There is no time counter provided with the program, but I started the search and after about 10 seconds though I'd try SearchGT. It completed its scan before LookDisk did so I then repeated the experiment with FileLocator Pro and it completed its scan before LookDisk did as well.
The interface is well laid out and the program easy to use. I didn't mean to damn the duplicate file finding feature with faint praise. It worked well, considering I simply set it to find all duplicate files on drive E without specifying file type, so I wasn't surprised that it was taking so long! When I stopped it it had found a number of duplicate files. In fact they were a surprise to me. I use Duplicate Killer Pro and have always specificed file type and a much narrower location to search so it has never turned these up for me.
Anyway, as mentioned, I think LookDisk is well worth considering, it's just not for me as I've already got tools that duplicate its feature set.