The case/holster combo from Verizon is nice and thin and its really cheap on Amazon!

Amazon.com: Motorola Droid RAZR XT912 Shell Holster Combo W/ Kick-Stand "Not for Droid RAZR MAXX": Cell Phones & Accessories

 

IMO the TPU skins are best combo of thiness and protection. I have 7 cruzerlite TPU skins. Just my $.02.

 

+1
The Cruzerlite TPU skins (available on Amazon for around $10 a piece) are thin enough to maintain the sleek factor of the RAZR, but do offer protection too. Dropped my phone getting out of the car the other day, and not even a scratch.

 

Nillkin. Thank me later

 

I always just have done a ZAGG on my phones, but I have a commuter otter box on mine and IMO it doesn't make it too big... but I would like a thinner case

 

Do these cases attract a lot of lint or anything when in your pocket?

 

Nillkin TPU cases are hands-down the best, IMO. See my review on the Nillkin TPU cases HERE. You can find them on ebay HERE for under $12.

I am able to put the Nillkin-covered RAZR in a leather belt holster for maximum protection. See my holster posts HERE and HERE and HERE.

I looked at Nillkin hard case, but went with the Nillkin TPU case because:

• I liked the feel, grip, and (lack of) weight of TPU.
• I liked a little transparency with the "clear" TPU cases ... to show the RAZR's Kevlar back.
• I have had problems with scratching the phone's bezel with hard cases on other phones.

However, I recognize that this is clearly a personal choice! Good luck!