Best laptop sleeves or cases for MacBooks/ultrabooks?

Do you have any solid recommendations for me?

I’ve been looking at Thule lately; they might not be the most stylish option on the market, but the reviews are consistently positive and the pricing seems quite reasonable...

Crumpler - http://www.crumpler.eu/laptop-tablet-bags/sleeves

http://www.amazon.co.uk/Shock-resist.../dp/B0180LEBMI

I found myself quite drawn to this particular model,

and while Incase certainly offers some exceptional options, their prices are incredibly steep, and most of their stock seems to ship directly from overseas...

https://www.incase.com/shop/devices/...ok-pro-retina/

I've finally picked this up, so I will report back once I have some actual impressions...

http://www.thule.com/en-us/us/produc...tl_85854234900

http://www.amazon.com/Thule-Gauntlet.../dp/B00R8KA2P8