i found the victor to be the easiest to be accurate with, due to good sights and a trigger adjusted to lowest pull weight. the ramp was an aid in rapid alignment of the sights before actual aiming started. as noted above, the overhanging ramp can also impede ejection of empties. i saw a photo of one in a magazine article written by M. Ayoob back in the day, where the right side of the ramps lower radius was relieved by milling it off at an upward angle to remove the blockage. unfortunately victors are worth too much to carve up for this reason now.
the models with rear bridge sights (supermatic, olympic, etc) did not have the rib blocking empties, and enjoyed a solid rear sight mount like the victor. they didn't share the quick acquistion qualities of a ramp mentioned above. they were a pain to cycle due to the bridge side mounts blocking access to the slide. in later models they also had trigger weight adjustment screws.
the sharpshooter and earlier target models had slide mounted rear sights without the above problems, but didn't keep the rear sight in a solidly fixed location.
as such from an accuracy point of view, the problematic designs were improvements, at the cost of reliability and ease of use.
as far as resale value, the 10X, victor, olympic/supermatic models have better resale number$. as for shooting value, i'd recommend a slide mounted rear sight.
a listing of the choices and your plans for their uses would help for more specific answers.
gunnie