I was in the market for the lowest and longest floor jack I could afford, and it turned out to be the Omega Model 29023.
I've used the heck out of this thing since I got it, and it has no problem reaching the pumpkin or engine crossmember on all my lowered vehicles. I haven't had to use my 2x10 step ramps I made 15 years ago just to get a jack under lowered cars anymore. At only 2.5" tall for the first half of the length of the jack it's slimmer than anything else I've seen.
It also has the single pump stroke to raise it up to touch the car to eliminate excess pumping just to get it up to the car before you start lifting. I didn't care to much about the feature when researching jacks as I never had it before it didn't bother me, but has been a really nice feature now that I've used it.
Here are some comparison pics I took back when I first got it. This is next to the Northern/PepBoys Big Red jack that is pretty much the exact same dimensions as the $39 HF Orange jack I also had for years and gave away to a friend that had no jack..
The pictures really do not do this jack justice, as it is Wayy longer, lower, and heavier than I was expecting, even knowing the specs before hand didn't prepare for the shear size. I can't say about the longevity but I love it so far, I was told Omega does have rebuilt parts available but hopefully I won't need to find out..
Here's the specs:
Capacity - 2 tons
Minimum Ht. - 2.5"
Maximum Height - 20"
Handle Length - 52"
Saddle Diameter - 4 -7/8"
Frame Width - 13.75"
Frame Length - 42.25"
Weight - 123 lbs.