I just saw that Mirliton are re-releasing some 28mm sized (28mm is a size not a scale) resin sci-fi vehicles. I've not seen these before, but apparently they are old Grenadier resin models. I assume that these came from Grenadier US as I never saw them in the UK back in the day.
The three better ones I think are these.
As some of you will know, I have a pathological hatred of walkers and giant Robots (I'm an engineer and a phycisist so i can't suspend my disbelief enough to make them viable or efficient) so I haven't included that one here, but i know some of you will love this...
I'm thinking that the second and third models might make reasonable partners to :