I've been using Host Monster Plus and their sister company (same place same machinery) for almost 3 years now.
A website I currently host there is http://www.neoacademy.info
which can be used for speed and stability tests.
I've been happy with their overall performance, with any problems being fixed at a fast rate with them being fully honest and not lying to me.
Overall they have had their few (very few) issues, but have always overcome them with honesty and speed, the quality is continually getting better with the service being upgraded without and price changes and old members getting the upgrade free.
<<URL removed. Advertising is not allowed.>>