Battery life? As said before: Amazing.Not being able to sync with Outlook has nothing to do with the Palm unit itself - Your m100 should have no problems despite having only 2M memory as opposed to the Smartphone's 8 - Even the old 1M Palms could do it. Problem is that Outlook sync capability is *NOT* a part of Palm Desktop. It is included on Palm Desktop CDs for any Palm after the IIIx, but if you're using a download edition of Palm Desktop you won't have Outlook sync capability w/o spending extra money for the Outlook conduit. Haven't checked yet to see if the Kyo CDs come with the Outlook sync software - I'm at work now and using the download Palm Desktop with my new Kyocera. (At home I've been syncing under Linux.) If memory is an issue when syncing email, the conduit is misconfigured.
Screen durability - Same as any other PDA.
Built-in speakerphone is marginal. Sometimes it works great (for a speakerphone - You will sound tinny on ANY speakerphone), sometimes it just barfs - But this could honestly be a result of VERY weak (on the verge of calldrop) signals inside my house in the boonies. Either way, you will sound MUCH better with a good noise cancelling headset than on any speakerphone, period.
Phone has vibrate - Much easier to enable than on my old 2035. Push and hold the ringer button to kill the ringer and enable vibe.
As with any phone except a flip phone the buttons can be pressed unintentionally - Tap the backlight button and you go into sleep/keyguard mode (This particular button is hard to accidentally press since it's on top of the phone) - The phone will also go into automatic keyguard after 2 minutes.
Unless you have your email configured for SMS alerts, you will not get email automatically. (Essentially, you can get a message saying, "log into your mailbox") - Unfortunately you pay 2 cents per received SMS with Verizon.
Overall - I LOVE my new 6035. IMO color is a Bad Thing = bad battery life. 2M is enough for most people, 8M is more than enough for even a medium-heavy Mapopolis user. (Mapopolis is one of the easiest ways to eat memory at 250k-1M per county map depending on density/size of the county.)