MF, the red one actually does have double ball bearing wheels as do at least the 2nd from right. the others have single bearing with rear bush wheels.
The scrawny blade carrier does nothing for power in thick grass - the lack of flywheel effect is marked. you also only have 2 vacuum producing blade lips as opposed to 4.
over thick leaves and tall thinner grass you won't notice and they are a fine choice for most people, but they dont shine in thick grass.
The tornado PT 19s did actually come out with a skinnier disc - they dont run as smooth but still hard to bog out.
If I had time during my yearly lawn reno, i would put a quantum with quadcut next to a quantum with quickcut, victa pt w 4 blade next to skinny 2 blade disc bar.
