I covered the Optimus Terra Weekend a while back. The Solo is the same great design and performance, it’s just 600ml rather than the 950ml of the Weekend. I’ve taken it on a few trips now and it’s very usable indeed. The size is just about enough for a dehydrated meal and a cuppa, although a wee topup and reboil are a frequent occurance to avoid filling it to the brim.
I get a gas canister (I took a Primus flavour last trip), stove (Crux Lite), the folding spork and a firesteel inside the pot with the lid on. I did use the pot as a mug, but the Snow Peak Ti mug has ruined that plan as now I just have to carry that as well.
The big question is which capacity is best, Solo or Weekend? The Solo is definitely enough, but the Weekend would do enough hot water for two dehydrated meals or multiple cuppas in one boiling. I’ll carry the Solo more I think as I do a lot of one night solo trips and it’s only 40g heavier than my MSR Titan Kettle and it’s much more user friendly.