For heating alot water get a heat exchqnge pot. They are not new tech, its over a century old, and still comes bqck for one reason, they work, the weight saving calculation is the only thing to think off.

The most difference you will see with a heat xc opt or kettle is a roarer burner and small pot ie jet boil, being as the msr is a bit more civivsed it will not be as great, but it is still worth it if you are going to use alot of fuel

1 litre 292g$ja=tsid:60797|cid:775777833|agid:44715081590|tid:pla-146884379107|crid:185535913393|nw:g|rnd:8503255023380397977|dvc:t|adp:1o1|mt:|loc:9046172&gclid=EAIaIQobChMIjtSL4pmg2AIVEGYbCh0SewVzEAQYASABEgK6t_D_BwE

Titanium 168g

So ab9ut 120g in it, but the primus has got to be around twice as efficient, but i stand to be corrected happy so if you plan on using more than 1/2 a pint 227g it should be worth it.