Starting a second system, need efficient speaker suggestions.

The amp is 80 watts or 40 watts triode

@traudio , my amp is the Cary V-12 (which I know is not the same as your integrated) but for the sake of comparisons it is switchable between 50 wpc triode and 100 wpc ultralinear (so it’s not way crazy different than yours in that respect). This is something you can easily play with and decide for yourself, but what I have found is that I much prefer the sound of my amp in the 50 wpc triode mode.

With that typed, I don’t have any problems at all using triode mode to drive an old pair of B&W 805s (by old, I mean from way back in the B&W Matrix series) with a sensitivity rating of 87. It is worth noting that a few years ago I moved my system from the living room to a smaller bedroom that is now my listening room and I listen quite near-field, but even when it was in my living room I listened mostly in triode and was happy with that. When I did feel the need to really rock the house down I simply flipped the switches over to ultralinear and it could make those speakers scream.

So I am not trying to sell you on B&Ws, but what I am getting at is that I don’t think that you have to restrict yourself to considering only real efficient speakers.

OP:  what are your current speakers, and how is your Cary integrated doing with them?

I don’t have the Cary yet, maybe Monday. Current speakers are Magnepan 3.7i with a Hegel H390 integrated.

I'll try the Cary, but I'm afraid it won't be up to the task.

86db/4 ohms? Maybe not, but still, in push-pull 40 wpc triode, I do not think that you need as judicious with efficiency as you would need to be if you were buying speakers for a 15 wpc SET rig.

. . . for more on the triode versus ultralinear subject, I did a search on this site (using that as a search engine). The results were like every other audio subject/debate here: no 100% consensus. As I typed previously, it’s easy to go back & forth and decide for yourself, but I can see your point--if you are selecting speakers based on which setting you’d like to use , I guess you’d probably like to have an idea what each setting will do for you (before you buy the speakers). Anyway, here are the search results I found in case you are interested in what others on the site had to say about the subject:

@elliottbnewcombjr , here is another pair of B&W 805Ns on ebay; the high bid is $980 right now & bidding ends in about 3 hours:

somebody got them for $1,550.

the others are in better condition, and is the warranty transferrable?

@elliottbnewcombjr  , yes, I was watching as the final bidding went down.  I went to stereophile on line to compare the Nautilus to the earlier Matrix . . . it looks as if the N only cost about 2k brand new, so I'd say they are holding their value okay.  That guy selling the ones you pasted the ebay link for says his are pristine . . . I would hope so, considering he wants more than they cost new.  As far as the warranty being transferrable with B&W?  I honesly don't know as I never thought about trying to sell mine, but the Nautilus series is so old that I would think that they were out of warranty for at least a while ago.