This might be useful for enhancer analysis, if our current vectors misbehave for some reason:

Drosophila Reporter Vectors Compatible with ΦC31 Integrase Transgenesis Techniques and Their Use to Generate New Notch Reporter Fly Lines

They have GFP, mCherry, and YFP versions.  The polylinker is smallish though – a common problem.  The promoter is hsp70.