Any experiences with Onan RS 15000 or Lister Petter GS6N/7P-LP or GS11N/12P-LP?

 I'm about to buy a new propane generator for my remote home which will
be used about 1000 hours a year initially, then about 200 hours a year
(once I upgrade my solar and wind arrays).

I'm looking at the Onan RS 15000 and the Lister Petter gensets (either
the GS6N/7P-LP or GS11N/12P-LP).

http://www.onan.com/pdf/standby/a-1422.pdf
http://www.lister-petter.com/lpi/pdfs/GS6N_7P-%20LP.pdf
http://www.lister-petter.com/lpi/pdfs/GS11N_12P-%20LP.pdf

If you have any first hand experience with these units, I'd really
appreciate you feedback.

Thanks,
-Evan

  The Lister is a Good unit and should meet your requirements the control
panel is a bit flimsy as to being sealed but if you have a dealer nearby for
future parts requirement it is good.

The Onan used to use other engines I dont know if this is still the same or
if they have build a new engine. Again they are very good but they are more
standy than the Lister.