Just got my iPhone 4 - first impressions

I just got my iPhone 4, along with two "bumper" cases. They're not really cases, but that was all that was available...

First impressions:

• The speakerphone is MUCH louder (and therefore better)
• The screen ("retina display") is absolutely phenomenal, but... it looks funny through my polarized Ray-Ban sunglasses. This WILL grind on me, and unfortunately I'll probably end up buying some new sunglasses.
• It's MUCH faster to do everything.
• The camera is quite improved, although I think the digital "zoom" is worthless.
• FaceTime is great.  I only know one person who has an iPhone 4, so the value of this feature is minimal for now.
• It feels solid, but so did prior generations.

Downers:

• No rugged cases are available yet, and the nearby Apple and AT&T stores are sold out of most iPhone cases in general.  I've been using an Otterbox Defender case, which has a holster clip.  Until they (or another company) come out with something, I'm stuck with the bumper, and then putting it in a generic (sideways) holster pouch.
• Internet Tethering will require that I give up my "unlimited" data plan...  I'm not going to do it yet, since I haven't had much use for that anyway.