Proac 2.5 or 3.8

I have 2.5's driven by tube audio research gear. my room is 16 x 30 ft. and 12ft high. when given enough power the 2.5's can really energize the room. I also have a proac response d-15 driven by 24 watts of tube power by unison research simply four p . The d-15/unison research combination also gives me more than adequate sound levels. In my room and electronics the d-15 has more midbass weight but the 2.5's go lower. but i still much prefer how the 2.5's make music in my room. Despite my room size it still took a while for me to find an ideal room position to avoid bass reflections from the walls.

Thanks Odaey..I appreciate your information..Did you ever audition the 3.8 to compare with the 2.5's ?

The truth is I'm working on getting one now (response 3.8). With the 2.5 there are times when i get to hear the drivers compressing or bottoming out when i want them to make my guts vibrate (but thats just me), thats why i wanted the 3.8. The first time i heard the 2.5 was in a showroom very much like your room dimensions and that demo was the reason why I'm a proac fan. I did consider the newer d38 but i was worried about it's impedance of 4 ohms. I hear that the d38 sounds excellent too but i feel the rear porting of the 3.8 would give a deeper soundstage compared to the bottom port of the d series as with my experience with the d15.

I was told that the 3.8's will fill a large room with sound like there is no tomorrow...What sort of power do you plan on using with 3.8's ? Is it normallly better to drive Proac's with tube gear ?

i have'nt mentioned that I've successfully driven the 2.5 with a 24 watt unison research tube integrated up to 90db SPL(using radioshack meter), But of course it depends on recorded material. I've also tried a sonic frontiers power one tube amp. on it and it sounds pretty good too. Much of your decision will depend on your music and preferred listening levels but I agree With stefan that the 2.5 would be happier with more power.