I have a pen 803t running at 177ma and putting out 185mW with an axiz acrylic. I havent tried this setup with any others yet, but will be doing so in the near future.
It was an experimental setup with a boost circuit that was a DIY tutored by IgorT. I use it every day for 15mins total. I found a way to get steady use is to point it at the ceiling as I walk through the dark as a room illuminator. I marked the date and specs on the tail of it, so I could keep track of its performance.
I made it in Nov. of 08, and will soon be posting a thread for it entitled 'my favorite 803'. I am still shocked that it works and still tests on my meter as 185mW with fresh batteries.
Its the toughest 803 ive had yet. It was and still is a high efficiency diode, only got 5 like this one out of 50 sleds. But there is no way I would even consider trying for 300mW, Dave is still the man for pushing one that far. I think id cry if I killed my favorite. :'(
What has been said about the higher outputs being brighter, and slightly higher in nm, seem consistant with this one. I also have another that is wired into my array project that you can barely see, but reads 120mW. I think someone else also had a diode sometime back which was similar. I want to see if I can guestimate its wavelength by comparing the readings of a lasercheck and laserbee LPM's. But its definately a strange one and dim to the eye..
Pic from last week.
You sir, are a fiend. A LUCKY fiend! 
