I'm looking for a fast lens for low light and street shooting. Since I'm an Oly shooter, I already have IBIS, so I don't think it makes sense to pay 'extra' for a stabilized lens, unless there is a significant boost in IQ. Given that, I've identified the following lenses as candidates: Olympic 25mm f/1.8 @ $400CAD Panasonic 25mm f/1.4 @ $600CAD OR I could pick up the following 2 lenses: Sigma 19mm f/2.8 @ $200CAD Sigma 30mm f/2.8 @ $200CAD Does anyone know if the Panasonic is worth an extra $200 to go from f/1.8 to f/1.4? Would I be better off with the 2 Sigmas? Thanks!