Providing it works for you Ken, that's all that matters. 80% of the time, its not the software at fault, but the equipment set up. Balance, flexure, etc (items I mention in the above posts). What software brings is simply improved flexibility to "tame" the equipment.
I should be careful of the terms I use to ensure I don't confuse people. I refer to "on axis" guiding as defined by a self-guiding camera. This is guiding in its purest form along the same optical path as the main imaging chip. "off axis" guiding is that performed by the rigid coupling of an in optical path device that diverts/splits a small amount of off axis light to another guide chip.
Some "off axis" guiders can be seen here;
http://www.astrodon.com/documentatio...n.cfm?DocID=13
http://www.rcopticalsystems.com/dbs.html - advanced version of an OAG
http://www.celestron.com/c2/product....=50&ProdID=357
Off axis guiding can be performed successfully, but it comes with its own inherent problems.