Figured I'd update and summarize what happened with my iFinder H2O I got from GPS City.
Lowrance has become responsive, providing good feedback and are more than willing to take my unit back for evaluation or repair/exchange should it prove to be defective.
I had some questions as to whether it was functioning properly, still do, but haven't had a chance to properly evaluate it yet. Since Lowrance got back to me and said it would be fine to send it back to them, I've decided to further check it out first.
My issue is that it almost seems like the internal antenna isn't working properly, the sensitivity seems really low and the unit doesn't get accurate fixes well at all unless I plug in the external antenna. With the external, and it's a cheap small one, the fix is nearly immediate and percent error is no longer several hundred feet but down to 20 consistently.
Now for GPS City.... http://www.gpscity.com/
After about five attempts at contacting them.
I sent emails to many addresses, and via web forms on their site for RMA requests, each of them containing my full contact information.
I've also left phone messages for their support staff, also with full contact info.
They have never once even responded, this is after a couple weeks now. Not even so much as an autoresponder email, and no return phone calls.
Yes, they have a wide assortment and yes the prices are low, but I would strongly encourage people to find another source for the pricey units people like to buy here in the group.
GPS City has pretty much abandoned me as a customer. Luckily Lowrance seems to care more about their customer base.
I realized that I should probably put in a mention of what I actually like about this unit too.
At one point I was pondering trading it for a different brand and kept coming back to this unit over and over again. I really like the interface, the display quality, and the size of the unit. It does exactly what I wanted and generally just feels right. Outside of the sensitivity issue, I really like the features it offers.
Of course the new iWay handheld unit with autorouting came out I think literally as I purchased this one...I probably would have got that unit if it's waterproof as well.