you can certainly use a turret post for the rest of your life, it will perform as intended and you may be happy with it.
QC toolholders are really nice to switch between many tools
for example you are going to make a simple bushing
you will need a tool to cut the od
you will need a tool to bore the id
you will need a tool to chamfer the ends
you will need a tool to part the bushing off
if you can attach these tools to the turret toolpost, you are in great shape, and you won't need anything else
but,
if you need more intricate turnings, obviously you will need to switch out more tools.
that's where the advantage of QC toolholders is.
another problem with turret posts is the height of the tool is not adjustable without shims or grinding the tool to the correct center height
this could prove disastrous if you can't get the tool close to center.
if you can't get the tool on center, your work will suffer the consequences
the QC toolholders are fully adjustable for height,
so using small HSS blanks , insert, or cemented carbide tools of different sizes, is very quick and easy.
not so much with the turret post
given the price of around $125, there are many import QC toolholders on the market
i got them on 3 lathes (one wedge type, 2 piston type)
i interchange the toolholders between lathes when necessary
here is a starter set (import, like i have)
https://www.ebay.com/itm/AXA-Piston...667166?hash=item3f699a6a9e:g:1PIAAOSwwbdWOImw
you'll pay almost as much for a turret holder,
but i think you may be at a disadvantage with the turret.
one other advantage of the QC AXA toolholders, you can get a holder that will take up to 5/8" tooling
good luck which ever you decide!