Has anyone compared K150 tubes and the stock EL34s in Primaluna integrated/amplifiers?

Just bought a lightly used matched quad of Tung-Sol KT-120 for my Primaluna Dialogue Premium. Initial reaction is wow, where did all that bottom end come from?   Next reaction was where did that sweet accurate midrange go?  
Looking for something in between. KT-88 maybe?  
I still have a lot of listening to do before I really get a clear opinion on the KT-120. If you are looking for extra punch the KT-120 makes a positive initial impression. 

Jambalaya 

that's good to hear because I want to avoid losing the midrange sweetness too.    

I'm wondering if I combined the KT120 with Cifte 12AU7s what would happen to the midrange.  Did you keep the stick 12AU7s when you replaced the EL34s?

I'm going to try the following by next week: 

Pre-amp section:  Swap out stock 12AU7s for new old stock Siftie 12AU7s 
Amp section: Swap out stock EL34s for reissue Mullard EL34s.

I'll follow-up with thoughts asap.

What did you think of the Cifte 12AU7 and reissue Mullard EL34 JB?  I tried this combo and found it sounds very good but lacking in bass weight. Overall the sound was very clear and concise but the Mullard doesn't have the bass of even the stock PL EL34.

@ samzx12

I have had the Mullard El34 Reissues in the PL Dialogue Prem Int Amp and felt the bass was ok. My biggest issue were cymbals(high freq) sounding rolled off at times. I then ordered the GL Kt77 and felt the treble was excellent and so far the bass is a little bit better, but I still need more break in. I only have about 70hours. Supposedly they need over 100hrs for the bass to appear.

I just recently got Cifte 12au7's. They have over 100hrs on them. I was surprised how smooth they were. I find them to be very musical. I was expecting from everything I read to be a thin, overly revealing type tube. They are not the thickest sounding , but are also not what I would call thin. I feel they are JUST RIGHT.