Fluid Film is a protectant, not a GP lubricant. It also attracts dust and dirt that ends up as a grimy film, so something to consider. Works great for inhibiting corrosion, especially from salt spray. As French mentioned, it has a distinctive smell.
In terms of general use, I honestly think silicone and PTFE spray lubes end up working about the same. PTFE-based lubes are ostensibly more chemical resistant, but for a GP lube it really doesn't matter much.
I've gotten away from spray lubes in general. I much prefer a precision-tip oiler for most everything. Far less mess and much less waste. For applications needing more viscosity, a dab of silicone lube or moly grease applied with a cotton swab or the tip of a folded paper towel.
For applications needs a general spritz, I usually reach for whatever can of spray lube is handy... CRC, Berrymans, WD, etc.
Brad