Did they talk about winterization at all?
My biggest problem with the Jabsco came after winterization. From my experience and what I have read the issue is the Jabsco isn't resistant to the alcohol used to winterize the heads. So after our spring launch, it started back leaking. Replaced it with another Jabsco, same thing next season. Replaced it with a Raritan, and no issues this season.
We live aboard in the summer (and soon full time) so the stale urine isn't an issue for us (always refilling it with fresh

) but I could see that being an issue for weekend users. I will agree that based on the design, the Jabsco seems less likely to clog. However, we haven't had any issues with the Raritan and like I said, we live aboard, so we do everything onboard as far as the head is concerned.
If I was in a warm climate that didn't require winterization, I would likely give the Jabsco another shot but if you have to winterize, go with the Raritan, IMHO.
Fair winds,
Jesse