Speaker suggestions


I know this is a difficult question to answer, but any opinions are welcome.

Here is my situation. I listen mostly to pop and classical, including many symphonies. About 15x25 feet (5x8m) untreated room. 20wpc Decware amp currently driving 15 y/o LSI 15 polks. Polks are doing fine, nothing wrong with them. I am the 2nd owner.

I am considering an upgrade to my speakers. Would like to have full (or near full) range speakers, no sub, strongly prefer something made (assembled, not just designed) in the US, with 2-3k budget.

One option is to refurb/upgrade the Polks. About 1k gets me new premium crossover, new damping material, full inspection, and cleaning with some cosmetic finish work at a local well regarded audio shop.

The other option is buying something new. I plan to keep the system for at least 15-20 years, so need something well built, with solid fit/finish, and good internal electronics so I do not need to recap for at least 15 years.

Prefer new but will consider lightly used option if find something specific I like.

Have been looking lately at Tecton DI and Impact towers. Some posts mentioned that they do not measure very well, but I did not see any charts on the forums or on their site. Mostly great user reviews,
Other options are Ascend Acoustics Sierra towers, Klipsch Reference, SVS ultra towers. I think those are all US made. Spatial audio has great reviews, but not sure how well they handle complex classical music. 

Can you please provide comments/suggestions? Any other options worth considering. I am not much of DIY person.

Thanks much.
"Any opinion as to the Klipsch Heresy III? Compared to Salk song 3."

With the 20 watt tube amp, big difference in dynamic range. Klipsch will have excellent dynamic range and the Salks will be limited like the Polks. The Salks performance would be better with more power. The 20 watts is plenty for the Klipsch.

Talk to what about psa audio ? Mtm210t. Made in mineral city ohio..
Audiokinesis is a great speaker brand, too.
Try Tonian Labs. You might be able to find one used or Tony Minasian might custom build one for you like he did for me. I have a 30 w/channel Luxman can run very loud in my room. Sensitivity runs around 92. They have a full sound but do not dig deep below 40 hz. Enough for classical and jazz, though
I have a pair of Focal 926 Aria's. I really think their mid range and high end are stellar. They are ported, but work great with my Gallo sub. I highly reccomend these soeakers. I am driving them with new Peachtree Nova 150, but they are 93db, so they could work  well in a small room with less power.