"Tell me that a boat full of sales-people just sank"
Guys, trust me, xplorer² ultimate is much better than the professional edition in terms of searching for files and folders of all sorts, and especially so documents with text. Whereas xplorer² professional scans folder contents methodically (read slowly), the ultimate version takes advantage of precalculated information in the system file index. It doesn't have to check all folders for your files, it just looks keywords up in the big table that windows maintains and quickly jumps to the right folder. The result is orders of magnitude improvement in search speed.
Other types of doubting-Thomas-isms take the form "yes but tool X or Y finds files very fast too — and free!". The snag is that all these programs like Everything only search by name. You cannot find any other attributes and you can definitely not search for text inside files' contents, which is by far the most time consuming kind of search. Windows search uses filter plugins to access and index information for all your complex document types (PDF, DOC etc).
A great deal of work went into importing windows search in the ultimate version and especially for correcting its numerous faults. You get a fair deal for the extra money you spend. And if no amount of talk will convince you, here's a practical demonstration:
Demo video comparing professional/ultimate text search
Or just see for yourself, download the ultimate free trial.
ps. If you are on old windows XP, you must install windows search v3 or 4 to take advantage of xplorer² ultimate search performance.