Comparison of HTTP request headers in browsers

For www.2345.com:

If-None-Match: "10e2e-4aec61bbd6fc0"-Gzip
If-modified-since: sat, 08 Oct 2011 09:23:19 GMT

Sogou speed edition:
(Request-line): Get/CSS/sug1_n20110503.js? V = 20110503 HTTP/1.1
HOST: www.2345.com
Connection: keep-alive
Referer: http://www.2345.com/
Cache-control: Max-age = 0
Accept: Application/XML, application/XHTML + XML, text/html; q = 0.9, text/plain; q = 0.8, image/PNG, */*; q = 0.5
User-Agent: Mozilla/5.0 (windows; U; Windows NT 6.1; en-US) applewebkit/534.3 (khtml, like gecko) Chrome/6.0.472.33 Safari/534.3 se 2.x metasr 1.0
Accept-encoding: gzip, deflate
Accept-language: ZH-CN, ZH; q = 0.8
Accept-charset: GBK, UTF-8; q = 0.7, *; q = 0.3
COOKIE: lc3 = 59131; UUID = 83004131579460502848232; STS = 1; LC2 = 59131; Gy = setm % 2c; WC = 59131; wc_n = % 25u6cc9% 25u5dde; fshtype = Google; lc = 1, 59131
Sogou compatible version:
(Request-line): Get/HTTP/1.1
Accept :*/*
Accept-language: ZH-CN
Accept-encoding: gzip, deflate
Threadid: 7836
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; slcc2 ;. net CLR 2.0.50727 ;. net CLR 3.5.30729 ;. net CLR 3.0.30729; Media Center PC 6.0 ;. net4.0c ;. net4.0e; infopath.3; Tablet PC 2.0; se 2.x metasr 1.0)
HOST: www.2345.com
Connection: keep-alive
COOKIE: UUID = 83004131579460502848232; lc3 = 59131; STS = 1; WC = 59131; lc = 59131; LC2 = 59131; wc_n = % 25u6cc9% 25u5dde; fshtype = Google; gy = setm % 2C

IE quick version:
(Request-line): Get/HTTP/1.1
Accept: image/JPEG, application/X-MS-application, image/GIF, application/XAML + XML, image/pjpeg, application/X-MS-xbap, application/vnd. MS-Excel, application/vnd. MS-PowerPoint, application/MSWord ,*/*
Accept-language: ZH-CN
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; slcc2 ;. net CLR 2.0.50727 ;. net CLR 3.5.30729 ;. net CLR 3.0.30729; Media Center PC 6.0 ;. net4.0c ;. net4.0e; infopath.3; Tablet PC 2.0)
Accept-encoding: gzip, deflate
If-modified-since: sat, 08 Oct 2011 09:23:19 GMT
If-None-Match: "10e2e-4aec61bbd6fc0"-Gzip
HOST: www.2345.com
Connection: keep-alive
COOKIE: UUID = 19044131579402481038154; rtime30000006 = 0; ltime30000006 = 1317475057244; cnzz_eid30000006 = 0000% 3A // jwd_key =; cdb_sid = yjyynn; cdb_visitedfid = 10
IE compatible version:
(Request-line): Get/HTTP/1.1
Accept :*/*
Accept-language: ZH-CN
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; slcc2 ;. net CLR 2.0.50727 ;. net CLR 3.5.30729 ;. net CLR 3.0.30729; Media Center PC 6.0 ;. net4.0c ;. net4.0e; infopath.3; Tablet PC 2.0)
Accept-encoding: gzip, deflate
If-modified-since: sat, 08 Oct 2011 09:23:19 GMT
If-None-Match: "10e2e-4aec61bbd6fc0"-Gzip
HOST: www.2345.com
Connection: keep-alive
COOKIE: UUID = 19044131579402481038154; rtime30000006 = 0; ltime30000006 = 1317475057244; cnzz_eid30000006 = 0000% 3A // jwd_key =; cdb_sid = yjyynn; cdb_visitedfid = 10

Qt default:
(Request-line): Get/HTTP/1.1
Connection: keep-alive
Accept-encoding: Gzip
Accept-language: ZH-CN, en ,*
User-Agent: Mozilla/5.0
HOST: www.2345.com

quick version of personalized settings by default:
Accept: Application/XML, application/XHTML + XML, text/html; q = 0.9, text/plain; q = 0.8, image/PNG, */*; q = 0.5
Accept-encoding: gzip, deflate
Accept-language: ZH-CN, ZH; Q = 0.8
Accept-charset: GBK, UTF-8; q = 0.7, *; q = 0.3
connection: keep-alive
Referer :?
HOST :?
User-Agent: Mozilla/5.0 (windows; U; Windows NT 6.1; en-US) applewebkit/534.3 (khtml, like gecko) chrome/6.0.472.33 Safari/534.3 se 2.x metasr 1.0
COOKIE :?
default personalized settings compatible edition:
Accept: */*
Accept-encoding: gzip, deflate
Accept-language: ZH-CN, ZH; Q = 0.8
Accept-charset: GBK, UTF-8; q = 0.7, *; q = 0.3
connection: keep-alive
Referer :?
HOST :?
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; slcc2 ;. net CLR 2.0.50727 ;. net CLR 3.5.30729 ;. net CLR 3.0.30729; Media Center PC 6.0 ;. net4.0c ;. net4.0e; infopath.3; Tablet PC 2.0; se 2.x metasr 1.0)
COOKIE :?