DCDC boost converters selection LTC7815 or ADP1610 or better?

Ive been looking the parametric search for hours now and not really able to get much sense out of finding perhaps the best product.

Im looking for a modern IC boost converter DCDC with 2.5volt to 4,2 volt input(lipo battery) to up to 3amp or greater output at 10 or 12 volts.  Most of the time my circuit is running at 300ma but also can spend a few mins at 1.2 amps.

First I saw the new LTC7815 but the start up voltage is 5 volts so that will lock me out of startup

I had been looking at the ADP1610 but was hoping for something with more juice/amps.

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