QUOTE(stratjb @ Oct 13 2007, 09:07 AM)

1. Intelligreen.
You'll have to explain this one to me as I didn't really see the point of this.
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2. Distance from Mark funtionality - GolfLogix says they'll add this soon but I think they've been saying that for over a year now!
The unit has only been out for 9 months.
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3. More courses in my area are available - I did this research in the beginning of the season so It may be different now.
I think they are indeed comparable at this point... at least all the courses I would play are mapped. Plus they will usually map a course requested within a week.
When you used the word mature... the following things came to mind:
1 year warranty versus 90 days. If the manufacturer does not feel good enough about its products to offer at least an industry standard one year warranty, neither do I.
GolfLogix was the first to supply Vista support for its software, and is the only vendor to support the Mac OS (and doesn't require IE to communicate with their servers). It seems clearly that GL's software development is more mature (even though the SkyCaddies have been out far longer).
Many GPS users will argue the ETrex platform to be more mature than the Explorists series, and that it is better built and waterproof. Don't know about the SG5 hardware.
YMMV