I love the look of the planetbox lunchboxes but I'm darned if I'm buying another lunchbox! We have the Garnet Hill insulated lunchbox that came free with 5 yr old DDs backpack, and she loves it. What I'm looking for are recommendations for easy to use stainless steel inserts for the lunchbox to store dry and wet food. Here are some options I'm considering - if you have any of these, please let me know how you like them!

Thermos food jar: http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER
(seems heavy, and I'd still need additional inserts for dry food)

Lunchbots Duo: http://www.amazon.com/LunchBots-Duo-...4255286&sr=8-2
(looks great for non-wet food - is it easy for a 5 yr old to open and close?)

Lunchbox leak-proof round container: http://www.amazon.com/LunchBots-Stai...4255373&sr=8-8

Kids Konserve leakproof containers, set of 3: http://www.amazon.com/Kids-Konserve-...ref=pd_sim_k_2

Other options or a case for planetbox would be appreciated! I had hoped the PB would fit in the GH lunchbag, but another poster said it wouldn't so I'm not going there...