Transformers rescue bots

[Afreshstartplease]

I have purchased the rescue bot head quarters for my 3 yo. Which figures are best size wise to go with this?

Bump

Anyone ?

We've got the old version and have these sets to go with it
www.amazon.co.uk/gp/aw/d/B0170TKP80/ref=mp_s_a_1_1?ie=UTF8&qid=1477381667&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=transformers+rescue+bots+rescue+cutter

Ty yellowsun!