I'm a wood stove guy...because we have 80 acres of free wood.
I just installed a double sided propane unit in my current customers addition. It is actually a pretty easy installation, and we are having the unit finalized or finished up by the company who sold it.Then the inspection from the fire Marshall and stone faced.
It is a Vermont castings, good product as we have done this before.
Go for the direct vent, and get the piping with the fresh air intake with the venting. Then have a good installer finish up and check the install. These units need to be adjusted perfect or they soot up the glass pretty fast.
Enjoy it while the gas prices are lower now than you will ever see again.