this thread should probably be in the "outdoors" section but...
I have an OHT and the Rescue Tool, backups to my fixed blades.
the RT is heavier and thicker than the OHT and Soldier and is made
for emergency situations, a beefier/specialized OHT. The Soldier
has grippier scales but basically the same as an OHT.
The RT has a specialized glass breaker and glass cutter/saw that are
removeable. It also comes with very bright stay-glow scales that
last a long time. It was made with emergency people to better help
them in emergency situations, that's why it's more expensive
(unless you find a deal!)
The OHT and Soldier have a wood saw, the RT does not and the glass
cutter would work poorly for this, but both can be used for rural
or urban environments.
The OHT comes in PE and combo edges and round and oval holes.
I keep my RT in the car and my OHT in my pocket.
both compliment a Bussekin blade <img src="/ubbthreads/images/graemlins/wink.gif" alt="" />