I like my GoToob, but it was expensive and I couldn't find any alternatives in eBay, Amazon, AliExpress or TaoBao. So I bought my FIFO bottles. Companies seem to have finally caught on, as now I'm seeing similar products. Groupon recently offered one by MyFriday:
I've only tried filling them with water and squeezing them - no leakage. They also seem to dispense normally and relatively straight (if the x cut into the valve is off-centre, the stream will also be off). I don't think these are rated food safe, though.