Very small update this week - A few months ago I acquired a cheap box of electricity transmission towers - 5 in a box for $15 - a decent price in my book - unlike the Hornby ones which were about 4 for $40.
Anyway - I can't actually remember the brand... but here is what they look like based up:
I find these small enough to not overwhelm the table, but big enough to give the "modern" impression that I after.
I've applied no weathering and have left off some small parts which I didn't think really added to the look.
There you go!