eXcelisys quickly cut to the root of various critical problems and promptly fixed them after many others tried and failed.
The cost was high, but not nearly as high as the cost of having my website be insecure, inaccessible and with several mission-critical plug-ins disabled.
To elaborate, the core of the problem had to do with code errors on the host server, Bluehost. Bluehost tried and failed to resolve them, as did several consultants. Thus, I was forced to switch hosts, always a near-death experience owing to the many problems (file transfer, email etc.) that arise from such transitions.
eXcelisys methodically worked through these problems and made everything work. It wasn't easy, but they succeeded where others before them failed miserably while claiming to have succeeded. Put differently: If you own a Ferrari don't ask a Ford mechanic to fix it.
These guys are the top of the mountain when it comes to fixing seemingly intractable problems.