Try 8 min 12 max for searching, 5 min 8 max when not searching.

Yes, the more host you are connected to the more horizon you have and the more files you can find in a search. On the "Statistics" page you can see your horizon and the total Kbps that your hosts are using up. In other words if you connect to say 20 host sure you will find lots of files but you won't have any bandwidth let to download with.