My Pro/Con List for the MoPho, from what I consider most to least important:
Con...
1. A long-standing Motorola-specific bug where low-bitrate streaming audio (e.g. talk radio) often is unlistenable dut to popping, skipping, and bursts of static. I'm a RadioReference.com feeed provider, and I made my own feed listenable by configuring 32kbps stereo rather than the default 16kbps mono. I'm nagging Motorola incessantly to fix this.
2. Pentile display with backlight at brightest setting has incorrect color rendition. Yellows have a mustard hue. This affects greens, browns, and oranges as well.
3. Motorola's support forums are very good, but it takes a bit of "convincing" sometimes to get a bug kicked up the line for fixing. I've occasionally seen a prevailing "must be user error" attitude. If you bring something to their attention and make your case well, things can and do get fixed but the process can be annoying.
Pro...
1. RF performance. The MoPho is the best smartphonephone I've ever experienced on the Sprint network at acquiring and holding a signal. All my "known trouble spots" are no problem with this handset.
2. Audio quality is also the best of any smartphone I've ever had my hands (ears) on. The earpiece and speakerphone have loud, stellar-quality audio. The speakerphone works in a moving car and is loud enough to host a moderately large meeting. Top-notch stuff here.
3. Per #1 and #2 above, if you want your smartphone to actually work well as a phone, the Photon is hands-down the best choice on Sprint.
4. Motorola support and updates have been nothing short of spectacular. We've gotten three bugfix updates in the first two months, including adding Google talk video chat support, fixing a GPS position reporting error (which I reported only a week or two beforehand), and addressing a nasty bug affecting some phones which toggled incoming calls to "mute".
5. PenTile display. Yes, the color is off at brightest backlight setting, but this display is outstanding out in the real world, especially in direct sunlight. This is the best smartphone I've ever used outdoors, and the only one I could ever put an anti-glare screen protector on and still see very well under all conditions. It's insanely bright when it needs to be. The ambient light sensor works fantastic at keeping the screen appropriately bright for nearly any situation.
6. Battery life is outstanding. A full day's hard use is no problem at all.
7. Email client, particularly for corporate (MS Exchange) is outstainding. Simple, fast, effective, and very readable under all conditions. The interface allows handling of multiple messages, similar to Gmail's mobile interface.