Excellent reply, thanks for your input.
I suppose my post initially lacks some context. My car knowledge is novice at best, but from what I have read online using a purely objective view, my conclusions were that the Octavia Estate (diesel) would suit us best. My reasons:
1) I commute 70 miles a day for work (I've driven 13,000-17,000 miles a year over the last 3 years)
2) We go on family day trips at least twice a month driving at least 100-200 miles on a weekend
3) Relatively good value for money relative to other cars (from the online research I've done)
4) I thoroughly enjoyed test driving the VRS, has a nicer feel than the standard 1.6L TDI diesel (Mainly the acceleration, interior, and steering wheel 😅)
5) I have access to a Honda Jazz that I do occasionally drive, but going to have two under two, I prefer to have a bit more space in the back for two rear facing child seats as well as the bootspace.
On another semi-related point on why I'm dropping £20k on a car. I've been pretty frugal all my life, and I'm in a position where I have more than enough disposable income to afford a nicer car. Very irrational point - I mentally don't want to spend £40k-60k on a car because I don't feel like it's good value for money.
This is partly why I am asking for advice if it's worth splurging extra £1000s for an upgrade. I could just chuck the difference in an index fund, but who knows how much joy a VRS could add to my daily commute :P