Hello. Welcome to the Forums! A basking bulb is solely designed to put off heat. You do not need to waste money on an expensive basking bulb if you do not want to. A regular run of the mill incandescent bulb will do the trick just fine. Get a 60 - 75w bulb and that will produce plenty of heat for your cham to bask under. From there, you will need a UVB bulb and hopefully a grow light for all those beautiful live plants you will be putting in the enclosure. LightYourReptiles is a great place to get what you are needing for your enclosure. I would suggest taking some readings of your temps once the bulbs are installed just to make sure the wattage of bulb is sufficient for a Panther's basking requirements.