Panda smaller and quieter
I have the 9KW Kohler, and it has been very reliable, considering that it is fairly new and hasn't seen much use yet. However, the panda is smaller, and I'm told is quieter and does not generate as much heat. On ours, installed under the forward berth, you get a free massage, and stay kinda warm, which (to run the A/C) is why the genset is there in the first place. Sorta wierd, wouldn't you say! So I think I'd vote for the panda if I were starting over.