which bag do you suggest ?

Messengers

$41.39 - Belkin Messenger Bag for 15in Laptops Chocolate_Blue

$41.39 - Belkin Messenger Bag for 15in Laptops Black_Red

$39.99 - Targus Grove Messenger

$21.57 - Lenovo Messenger Max​

Business cases

$71.28 - ThinkPad Premiere Leather Case

$63.36 - ThinkPad Executive Leather Case

$56.96 - ThinkPad Deluxe Expander Case

$47.99 - Targus Grove Topload

$37.76 - ThinkPad Business Topload Case​

Backpacks

$49.68 - ThinkPad Carrying Case - BackPack

$44.16 - ThinkPad Business Backpack

$43.19 - Belkin Sling Bag for Laptops up to 15.4in Black_Red

$43.19 - Belkin Sling Bag for Laptops up to 15.4in Chocolate_Blue

$37.12 - Targus Slam Backpack​

 

For what??

 

T500
, also if you suggest Backpacks then i like thin one

 

I've used the ThinkPad Premiere Leather Case and a Case Logic TNC-15 (not listed).

Case Logic TNC-15. Well thought out, roomy for a T400, lots of pockets and storage plus it is under $40 delivered from Amazon. Still should have plenty of room for a T500. A very good value but rather pedestrian in looks.

http://www.newegg.com/Product/Product.aspx?Item=N82E16834990016
http://www.amazon.com/Case-Logic-TN...1?ie=UTF8&s=electronics&qid=1222909641&sr=8-1

The TP Premiere case is nice too but not quite as roomy as the TNC-15 mostly due to the arrangement use to secure and protect the laptop. With the T500 this will probably be less of a factor since the laptop should pretty will fill out interior but the TNC-15 will still have an advantage. The T500 with a 9 cell battery might be a tight fit. There isn't a lot of extra room height wise with my T400 + 9 cell. Has lots of pockets too but not as many as the TNC-15. The black leather really looks sharp IMHO. I guess it all depends on what you want it for. The TP looks and feels great while the Case Logic is very functional and a better buy.

 

For messenger style bags, go with Timbuk2. A little expensive but worth every penny.

 

Dell exclusively sells a Belkin slim backpack. Here is a link. It includes an accessory pouch. Capacity is enough for the laptop plus one good-size textbook and a notebook, but not much else. It is well built and stylish, but does not hold too much.

 

i bought belkin energy backpak......its too good for me as i wanted to have thin and lite one.....i hope messenger would be the same........

 

I went with an Ogio Metro (Black).