With 15W tube amp, which speakers to use?

The older Klipsch will play at high volume in a big room. I know this because I audtioned my La Scalas with the previous owners 3 watt amp. Those speakers are rated at 104 Db at 4 ft per watt. 104 decibels is unbaerable . The problem is that using a small out put amp all of the sound comes from the Squaker or midrange horn and tweeter. the 15" woofer adds almost nothing to the sound. If you were to use a higher output amp the music has much more bass and balances the shouty horns thus, it is much warmer, I say warm with caution because it is relative to the low out put amp's tizzy sound they are never fuzzy. The bass is very good however it remains tight and articulate bass with more power. For reasons I cannot understand SS macs and Klipsch are well to have excellent synergy. ? autoformers? I use an old 50 watt power amp by Mac with mine. But I use it rarely, I just happen to have it. I will be disposing the gear I don't use -in the future look for ads here on the Gon.
Sufentil's comments on Coincidents are true they play well with low watt amps but you have to like the "house" sound. It impossible to say what would be the best . The best speaker for you is the speaker you like the best. It is that simple.
Hi Mike how's it going?

quad 57's work well with 15 watts. i owned two pair of 57's and drove them with 4 quad tube amps. i believe they were around 15 watts.

Thanks for all the respone. I would like to add more information for my question.

1. I listen to female vocal and Jazz most of the time
2. Listen in a small - mid size room (150 sq feet) with low volumn, usually at night.
3. My price range is around $2000~$4000 used speakers.
4. Monitor or floorstand, does not matter
5. Resale value is also important, since I have experience to buy some good DIY audio stuff but hard to resale.

thx

Concident

I'm currently using a pair of Energy C-3's with my 15W tube amp. They're rated at 90dB in-room efficiency and I have a small listening room. Wouldn't recommend using anything under 90dB with an 8 Ohm impedance.