I have AGG 3 cup and vargo ti-lite (myti mug is kind of a copy). I use both pots according to my needs on each trip.
If I take my wide burning WBS I have to take my wide and low AGG 3cup pot.
If I take my primus micron (old style) I take my Vargo Ti-ite as it matches the flame well and I can use as pot and cup as I only use dehydrated meals when backpacking.
The 3 cup pot I always have to take another cup to drink from. This is usually either a light plastic mug or a Ti mug (alpkit myti cup). This adds to my measured 96g for the 3 cup pot and lid. I also have to take my mini trangia clone potgrip (bent metal strip) as well.
These two systems, including stove, pot (and grip if needed) and cup for drinking (if needed) both come to about the same total weight. But this is further complicated when I take a separate mug with my Vargo/gas stove system which is now heavier by the cup weight.
I really have no preferences as to which system I use other than I am more used to gas in colder weather and always have problems with meths (I know I should just heat the meths and burner first perhaps using a primer plate or attached primer wick). The gas system is kind of my go to if conditions might go cold or windy as I have more experience and trust in it.
As far as performance goes I personally thing the AGG 3 cup (being Al) is better for a quicker boil using a gas stove however with meths it is slower due to the meths being slower stove not the conductivity. I would not be that bothered by boiling time with either system as quite fast enough for my needs.
Interesting thread this but it will be decision time soon. You sound like it is the low and wide pots you prefer. If so then the AGG is acceptable. Bear in mind it is so light by being thinner Al I think. Look after it and it's ok but it can dent easy. The lid is solid though. Perhaps save weight with homemade foil lid??? I do like my Vargo Ti-lite though. Use it on woodburner, meths, gas and esbit stove. The AGG is really only my whitebox stove use or occasionally gas. For me it is how the whole system fits efficiently in my pack too. That is why the vargo is slightly my preferred pot/system. Do look at your whole system not just the pot.