Noel,
The height of various pianos can sometimes be difficult for a consumer to grasp. Most manufacturers measure the height of their piano by measuring from the flat floor to the very top of the piano. 40", 42", 44", and so forth. Now, if you look at a Kawai CE-7N Continental Console you'll notice that the piano, beside having no front legs, has no casters either due to it's cabinet design. If Kawai had installed 2" casters on the 42" CE-7N it would measure 44". In my opinion, the CE-7N has a very pleasing and more than adequate powerful bass.
I remember one {Un-named brand} manufacturer that had taken their 39" big spinet piano, installed 1" larger casters, and installed a 2" thick false lid then marketed that piano as a 42" console. Unsuspecting consumers bought that model piano instead of a competitor's 39" big spinet because they thought that "bigger is better" and that they were buying a console piano not a big spinet. These consumers could have looked at the piano's action too if they knew what to look for and what the differences between drop or indirect blow actions, full blow actions, and direct blow actions are. All spinets have drop or indirect blow actions.
Anyway, back to your selecting of a good used piano.
Pick your used piano with condition, tone, touch, stability, durability, yearly maintenance costs, longevity, and budget as the deciding factors. In my opinion, it's not a good idea to base your decision on the piano's size.
Best of luck with your search.
Cordially,
Bear