I am looking for a pan/tilt head for my tripod - I have also seen them referred to as a "fluid head".
Any recommendations for something like this? I have a ball head, but want something with a handle to adjust etc.
I think SJMS is right -- a geared head will probably get you closer to what you're looking for.
Fluid heads are really designed for moving image use, though they're also handy for spotting scopes and even for long-ish primes that are a little too small for a full gimbal setup (300/4 can be nice to use on a fluid head in some circumstances). For a basic fluid head, the Manfrotto 501 is probably the best inexpensive entry point for a full size DSLR. Beyond that level, prices, size, and weight increase quickly -- but so does performance.