GFP-Lentivirus - I need to Order!!! (Dec/20/2010 )

Hey all you lab rats out there, anyone have any suggestions for where to find a good gfp-lentivirus (not the vector) or companies that you prefer? I'm looking at GeneCopedia and Biosystems. Thoughts/comments I appreciate them all. Thanks in advance.

Do you just need a constitutive promoter? SA Bioscience makes a line of luciferase or GFP lentiviruses inducible by differnt signaling pathways, but they also have "positive control" lentiviruses. Can't say I have used them, but I do know the group that made them think they should work well.

Kevin

we got a good deal with sigma for lentiviruses. decent titers as well.