I use mine for combustion about a third of the time. By the way..... the Lattice is the best thing I've EVER combusted with, and I've had bongs/bubblers of one type or another for 30+ years. It is nice with dabs, and is still my current fav with vapor - but IMO it really shines with flame toasted nugs.
Strongly suggest an ashcatcher. Usually I use a little cheap Chinese one I have with just enough water to catch the crap. Think the Lev a/c is in the budget this week tho - so will be getting it soon!
1 other tip... ymmv, but I like to pull the ashcatcher off the Lattice to clear a hit when combusting. Then put it back on and clear the ashcatcher after (or just blow it out while still off). Not that you can't clear both at the same time, but I find the Lattice to be such a PERFECT piece of glass that I like the flow better with no a/c interfering.
I can't speak for the Mona, and must admit I'm intrigued - but I have a hard time believing anything out there will hit better than this. Have only had the chance to try a Mobius stereo once (well, a few hours with more than a few hits). I didn't want to be rude so I kept it to myself, but the whole time was sitting there thinking you paid what for this thing? It is pretty... but I'd rather have a Lattice and a Mona and probably some change in my pocket!
And, I have to say it again... there is something about this piece that adds to your buzz no matter how you're using it. Can't even begin to figure out how much time I spend stoned looking at it and trying to figure out how. It just does!!
EDIT: YES, clean it often. ISO usually does the trick. You don't want to be trying to figure out how to scrub the inside of this one.