Help finding a new desk chair

I am looking for a new desk chair because bits of plastic are falling out of mine and the pneumatic piston messed up. My budget is 200 max but I would like to go lower. The only requirements are that it will last and have arm rests. What would be my best option?

Chairs I have looked at so far and liked.

http://www.amazon.com/Ergonomic-Office-Chair-Contemporary-BT-6001-GYBK-GG/dp/B001BX3EDK/ref=sr_1_4?ie=UTF8&s=home-garden&qid=1248147733&sr=8-4

http://www.amazon.com/Alera-NI41CS10B-High-Back-Swivel-Chair/dp/B001MS6Q8Y/ref=sr_1_30?ie=UTF8&s=office-products&qid=1248147927&sr=8-30

http://www.amazon.com/Super-Mesh-Chair-Headrest-Back/dp/B000NGWSXI/ref=pd_bxgy_op_img_b

http://www.amazon.com/B8601-Executive-Leather-Chair-Black/dp/B00166DR9S/ref=sr_1_12?ie=UTF8&s=office-products&qid=1248147900&sr=8-12

http://www.amazon.com/Executive-Black-Leather-Swivel-Computer/dp/B000VNUH0Y/ref=sr_1_6?ie=UTF8&s=office-products&qid=1248156262&sr=8-6

Any ideas? Is there a better place than amazon to get desk chairs?

http://www.target.com/Office-Chairs-Home-Furniture/b/ref=sc_iw_r_1_1/179-7524765-0068128?node=3528011

http://www.overstock.com/Home-Garden/Office-Chairs/2024/subcat.html