G'day Jo,

The main difference between these two sets is the size of the pots, pans and kettle.
The 27-2 is the smaller set suited to a solo or ultralightweight setup with 2 x 1L Pots, 1 x 18cm Pan and a 600ml kettle. The 25-2 is the larger set suited to couples or groups with 2 x pots 1.75 and 1.5L, 1 x 22cm frypan and 1 x 900ml kettle. 

G'day Timothy,

The GSI Java Drip is a popular option for hikers & lightweight adventures.  It barely weighs a thing and is very packable, and can basically be stuffed in anywhere.
You'd be able to pack it up with the trangia, no worries, and will also clip to most cups & vessels.
Another option may be the collapsible X-Brew, whilst it may not fit inside the Trangia it would definitely tuck or anchor underneath the Trangia kit strap.

That looks awesome!
Many happy bush coffee's in your future I think.

G'day Carolyn,

I don't have a picture sorry because all of our 27 series stoves are sealed in packaging, but the 27 series kettle will nest right inside the 27 series stoves with the frypan/lid closed. So you'll have no trouble fitting it all together and storing it in the orange Trangia storage bags. Do a quick search on YouTube for "Trangia 27 kettle" and you'll find a handful of video reviews showing you how this all works.