I have 7, 8 if you count the parts bike. Why? #1 reason is they were cheap..

1 Thermoplastic carbon full suspension bike - Downhill MTB Bike -GT
1 Aluminum full suspension bike - Cross Country MTB Bike -KHS
1 Aluminum front suspension bike - All purpose Hardtail MTB -Trek
1 Aluminum/ChroMoly rigid bike - Mixed frame material MTB -Fisher
1 Aluminum rigid bike - Elevated Chainstay MTB -Revolution
1 ChroMoly rigid bike - Rigid MTB -Fisher
1 ChroMoly rigid bike - Road bike -Raleigh
1 Chromoly rigid bike - Complete parts bike -Diamondback

See...not one is the same..at least that's what I tell my wife