TorrentScan is a metasearch engine for torrents, with one difference: you can customize TorrentScan to look for torrents in only the sites that you specify (which is certainly a very convenient feature). If you can't find what you're looking for using one collection of torrent sites, simply redo the site with different sources; easy and quick, and from one convenient location.
Now you can sort (drag and drop engines) your torrent engines and when you are on Engines page you can also add/remove engines with drag and drop feature.
Search the top torrent sites from one single search bar. No hassle to find torrents: enter your search keywords just once! Then choose the torrent search engine you want to search.