Okay--an update:
I called Semsons and they said that if I called TomTom and they phone-approved my 8525 for compatibility, they would warrant the purchase (I had to get a reference number for the call). I did call TomTom and (after many failed call attempts and then an HOUR on hold) finally got a tech... he said that it was not officially compatible, and that it is in "product testing". He said it would take until at least the end of February before it was officially compatible. He did say that up until now, they had not found any issues with the 8525 that would disallow it from the compatible list.
I called Semsons again, and they said that my call to TomTom would suffice, even though I didn't get an "official" okay... and then I asked if they recommended it for the 8525... and I was surprised that this guy said, "Well, not really." Huh? I thought TomTom was a good platform...
He went on to explain:
He said that the I Guidance 3.01 with the GPS with SIRF III technology was his preference for US maps. (And hey, it's cheaper!) He said that I Guidance did guarantee its compatibility and that the TomTom maps didn't include as many POI's as the I Guidance (presumably because TomTom is a European company and I Guidance is US-Based). But the kicker is this: TomTom only allows you to put their software onto ONE unit. Period. Ever. I Guidance allows you to put it on your laptop, all the PDA's in your house, etc. My husband has a laptop with bluetooth and wireless internet and it would be cool to share it with him (so when we travel together we would just use his laptop instead of the handheld) and he can use it when we are apart. (He has his own GPS unit but no software.)
So... after researching the various review sites for GPS, I think I'm going to give this I Guidance a try.
This is what I am thinking of...
Globalsat BT-359 Bluetooth GPS Receiver (SiRF III) w/ iGuidance V3 North America for Pocket PC, PC, and UMPC (DVD) (Free Vent Mount)
Oh, and Semsons said that they will have a custom base available for the 8525 with power and speaker in a few weeks. I think I'll wait for that to come out before I buy a base.
Whaddaya think?
--Kristin