Not a big issue really
We buy Juniper kit (routers, firewalls and SSL VPN's) due to them being open (standards - unlike Cisco), cheap compared to others, excellent support and pretty reliable.
Use HP ProCurve for switches, so when we look at doing our wifi properly we'll either go HP or Juniper depending if Juniper have a wireless solution or not by then.
Think Juniper have a lot to offer. Just hope they can tidy their product range a little. Buying from them is nearly as complicated as buying from Cisco...!