(BURP!) ... now where was I?
I guess it's a matter of "to each, their own" but other than offering a place to park, I have no use for a 4-post lift, though I suppose it does lend itself to hold plenty of tools while you're reaching across it!
The mid-rise cannot be parked under, so no clear advantage there.
With a Healey and its underslung rear axle, plus the 2" block under each aft front shock arm, you could leave a your car suspended in the air indefinitely with a 2-post, as well as completely unrestricted access for all manner of maintenance and repair work.
All lifts are comparable, price-wise (I've seen mid-rise lifts cost up to double what an economical 2 or 4 post lift can be had for) so for most, it's a matter of space constraints, I think, not the money.
I've got both, an Eagle 9000# "floorplate" lift (worked in my former 9'3" ceiling garage and even better in my current 10'4" one) and a Bend-Pak (ALI Certified) 9000# asymetric (with overhead cables & hose in my 12'4"+ high ceiling'd shop) and they both work terrific for a Healey.
If you're asking what the most useful lift type is, take a look at the rows of 2-posts at every dealership's service dept__the only exception being a drive-on alignment rig.
If only the shop was still this empty...