Thanks for taking an interest. This whole booktyping issue is all new to me -- had no idea what bitsetting was all about until I first hit it yesterday (and did some searching).
I've never had a problem with my DVD-V players (Pioneer DV414, Denon DVD-2900) playing my 1100A burned DVD +RW Fuji (actually Ricoh it seems). I'm just picking up an LG-DVB418, but since that is current -- I doubt booktyping will be an issue. It's been a good drive.
I just finished burning a video project with the 3550A (Fuji +RW) and will try it with the two players. Not expecting a problem, but who knows. My bigger question is with burning Memorex +R (possible media problems from what I've read) and Verbatim +R DL. I'm under the impression both could raise booktype issues with my players.
So far, my system, Nero, and video software seem to be able to access both drives interchangably (except for that Nero speed test glitch mentioned earlier -- pretty minor item, and there's a Ctl-Alt-Del workaround :)). It's useful to have two burners on hand (if only for erasing +RW media during a burn), and the reason for making the 3550A external was flexibility. This way I can use it with my notebook as well (which also has firewire).
In other words -- unless leaving the 1100A in place results in trouble, I plan to keep it online. I'm going to take a look at later than 1.80 FW releases for it(though not using NEC's utilities, obviously) and may do a BinFlash update if useful. Should look at 1.06 Vs 1.05 for the 3550A as well.
PS -- I see BinFlash provides some Booktype control -- may come in useful.