I have a cart for one reason only: ticks.
I have a zuca backpack cart.
I thought it would be a good idea... It doubled as a rolling seat, I could use one backpack and just throw that in the cart whenever I wanted to use the cart.
This was not to be.
First, the cart had different dimensions than advertised, so I couldn't fit it into my trunk without retrofitting it to be able to be dismantled. So now I only use it if I can borrow my wife's bigger car or if I'm going to an all-day event and I have the time to build and strike the cart.
Second, even though folks said a Grip BX fits in one, it is a very uncomfortably tight squeeze, the base of the bag gets worn by trying to jam it into the frame. I know they make the larger backpack cart now, but when I got mine, it wasn't available. I ended up buying a Dynamic Discs Sniper bag which fits perfectly into the cage. But it was a whole extra bag that I only use for this cart.
If I were to do it over again:
I'd buy the EZ cart and throw the stool in the lower carrier location. If I had a bigger vehicle, I'd get the transit.