I haven't used one but I'd say the new SBG STi is the go.
Its CCD rather than CMOS and less likely to have weird artifacts that Lodestars sometimes seem to have. My Lodestar works but often requires autodarks which of course it can't do properly as there is no shutter but the dark subtract seems to leave a fragment of the guide star which you can guide on using CCDsoft.
It may work better in Maxim and it may be quality between Lodestars is rather variable.
Greg.
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