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I have the original SX guider but I am not directly familiar with the Lodstar but it sounds fantastic and by all reports is. Also remember though that any one of the smaller StarlightXpress camera's make excellent autoguiders too. They are all small and light (and pretty cheap), with the clean sensitive Sony chips and great cooling (no darks necessary at all) you can't get a better guider IMO.
I use the SXV-H9 as my guide camera which has a 9mm X 6.7mm chip and its sensitivity is good enough to clearly show a guide star in no more than a 2sec guide exposure every time at 1200mm FL through my 80ED guide scope, no darks either and I have never had to move the guide scope or reframe a picture to get a suitable guide star. Of course it is more expensive than one of the small dedicated guiders but there is always the SXV-M7 or M5 to consider too...mind you, second hand versions of any of these little beaut CCD's go for little more (or even less) than one of the less sensitive dedicated guiders do new...?
Just some thoughts
Mike
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