Is replacing the single standard bush with a poly item from Powerflex/Superpro/Polybush worth doing? There's a few threads from the past with mixed opinions, especially as to whether it's a very simple job to do or a subframe off job.

Easy enough to do whilst in place, whether it makes a difference or not, I couldn't say, I had one fitted, I'd say it's down to how OCD you are if you want it to match the rest.

I changed mine to poly when fitting the 'quick rack' so couldn't say if it was this that made the difference but steering is very tight and responsive now.