My impression of the Merrel Swtichbacks is that they felt a bit heavy, though I have not used any myself.
Currently I think Salomon offer relatively affordable, light and comfortable hiking boots (like the Revos). As an alternative, if you are looking for something harder and non-synthetic then consider something like the LaSportiva Tibets (though quite pricy).
As for Gortex lining, I find that this simply slows down how quickly the boots get wet. It definitely does not keep your feet totally dry, no matter how many measures you put in place to prevent this. This is been my experience and observation across several different brands.