Cisco and Juniper Inter-Operability Issues ???

All: Our company is purchasing a couple of Junipers and we are going to run OC-3 circuits off of them. We current have Cisco 7507 routers that will connect to the Junipers (via FastEthernet and later GigE). We run OSPF and BGP in our network. Any gotchas we should watch out for and any tips/tricks? I read the NANOG archive and saw someone mention OSPF problems with Juniper and to run ISIS. Is that still the case? Thanks! ----- Devon