[grayn]

I am relatively new to the hobby but have found my preference is to run 1/32 cars on a Carrera Go 1/43 track.  The main reasons for using the Carrera Go is that I can obviously run a lot more track on my 8 x 5 ft space and compared to my Policar 1/32 track set, the Carrera runs at nearly twice the speed and no, it's not an optical illusion.
I have half a dozen 1/43 scale cars, mostly Carrera, which in my view are the best at this scale.  But as my main interest is classic cars from the 60s, 1/32 Scalextric are the way to go for me.  I have a number of pre BMW Minis and Jag E-Types, that run really well on the 1/43 track.  I have found that wider cars, like my Mark 1 Jaguar, can slip a back wheel off track, on the inside of curves, so have added foam to help alleviate this.
I intend to widen most of the track with foam and also make a start at some landscaping.  Here's a rough photo of my current 1/43 layout.

[Kevan]

I bought a 8mm thick foam camping mat and cut shapes to fill the inside and outside of my Scaley Sport test track, with no corner barriers it enables the cars to slide without hitting anything.