Then you can add me as your second
. I've spent more than my fair share of time in a type II, and it sucks immensely. Maybe the people who AREN'T complaining about vans have never worked in a box unit.
The space is cramped as hell. You have almost no room to move around. Accessing equipment on scene is awkward with no outside doors. I've even worked in one vanbulance where you couldn't turn on the under-bench main O2 without opening the rear doors (we usually leave them off because most of our units have O2 line leaks). So, if you run into a situation where you start out on portables and need to switch to main, you get to play musical doors.
Fortunately, the company that I work for typically only uses the vans for BLS units, so it's not that big of a deal with accessing the equipment. But problems do happen occasionally. And occasionally ALS units have to use vans when the boxes are in the shop. Working a big MVC and having to fight against your unit trying to get spinal immob gear out is a PITA.
The only thing I hate as much as Type II's are Medium Duty units, but that's for a whole different set of reasons. Give me a Type III any day.