Sandel 3308

I asked about a problem I was having running the garmin 480 simulator
last week. Since then my choices have narrowed down to a Bonanza with a
Sandel 3308 and a Garmin 430. I'd prefer the 480 but for other reasons
this airplane is a better choice. I've been trying to buy a plane
already equipped the way I'd like it and this one is as close as I'll
probably get. The prebuy should be complete today or tomorrow.
Anyway, this plane has the Sandel 3308. I've flown a little with a
regular HSI but never with an EFIS (not much use for one in my old
citabria). This particular model has been discontinued by Sandel but I
understand that it's a good unit. Its interfaced with the 430, kx155
and an S-tec 50 autopilot. I've been reviewing the instruction manual
for it and its got some great features. I understand that the bulb
needs to replaced annually or after a couple hundred hours. Other than
that, I'm not aware of any problems with these units. Any positive or
negative experiences with them? BTW, the simulator for the 430 runs
fine.
Thanks
Dave