I see two download options for (iPhone 5 / iPhone 4) which one?

See Apple's support article for Identifying iPhone models

Friendly Name File Name Date Released Links

iPhone 5 A1428 US GSM iOS 7 Beta 1

iPhone5,1_7.0_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

iPhone 5 A1429 CDMA and Rest of World iOS 7 Beta 1

iPhone5,2_7.0_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

iPhone 4S iOS 7 Beta 1

iPhone4,1_7.0_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

iPhone 4 CDMA iOS 7 Beta 1

iPhone3,3_7.0_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

iPhone 4 GSM Rev A iOS7 Beta 1

iPhone3,2_7.0_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

iPhone 4 GSM iOS 7 Beta 1

iPhone3,1_7.0_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

iPod Touch 5th Gen iOS 7 Beta 1

iPod5,1_7.0_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

Apple TV 3rd Gen Rev A iOS 7 Beta 1

AppleTV3,2_5.4_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

Apple TV 3rd Gen iOS 7 Beta 1

AppleTV3,1_5.4_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

Apple TV 2nd Gen iOS 7 Beta 1

AppleTV2,1_5.4_11A4372q_Restore.ipsw

2013-06-11
  Direct
  Torrent
  File Info

MobileDevice Installer

mobiledevice_installer_package_mac.dmg

2013-06-11
  Direct
  Torrent
  File Info

Find My iPhone 2.0.3

find_my_iphone_app_2.0.3_for_ios_7_beta.zip

2013-06-11
  Direct
  Torrent
  File Info

iModSign 3.3.1

iModSign.zip

2013-06-24
  Direct
  Torrent
  File Info

MobileDevice Installer Beta 2

mobiledevice_installer_package_mac.dmg

2013-06-06
  Direct
  Torrent
  File Info

iPad Mini A1454 US And CA GSM iOS 7 Beta 2

iPad2,6_7.0_11A4400f_Restore.ipsw

2013-06-24
  Direct
  Torrent
  File Info

iPhone 5 A1428 US And CA GSM iOS 7 Beta 2

iPhone5,1_7.0_11A4400f_Restore.ipsw

2013-06-24
  Direct
  Torrent
  File Info

iPhone 5 A1429 US CDMA And Rest Of World GSM iOS 7 Beta 2

iPhone5,2_7.0_11A4400f_Restore.ipsw

2013-06-24
  Direct
  Torrent
  File Info

iPhone 4S iOS 7 Beta 2

iPhone4,1_7.0_11A4400f_Restore.ipsw

2013-06-24
  Direct
  Torrent
  File Info

iOS 7 Beta 3

Settings > General > Software Update > Install

July 12, 2013
  Direct

iOS 7 Beta 4

Settings > General > Software Update > Install

2013-07-08
  Direct

iOS 7 Beta 5

Settings > General > Software Update > Install

2013-07-08
  Direct