Opinions on these budget integrateds?

I don't know these other amps, but I will say this.  Don't write off the Primaluna Amps as "low power tubes".  They have superb transformers, and they deliver the goods.  I used my Dialogue to run B&W 803s, which are notoriously power hungry, and have a wide range of impedance.  The Dialogue handled them easily.   Now I'm running Revel F228 with a Dialogue and they sound fantastic.

You could get a used Dialogue in your price range... although they are rarely for sale.  There's a reason they are hard to find.  People buy them and keep them.

Not sure why the Hegel H160 hasn't been mentioned here yet, but I believe it ticks all your boxes and gets stellar reviews.  Here's one in your price range...

https://www.usaudiomart.com/details/649455519-hegel-h160-integrated-amplifierdac/

Since you're considering the Halo, you may find this review interesting as it compares it directly to the H160...

http://www.enjoythemusic.com/magazine/equipment/0915/Hegel_H160_Review.htm

There are also reviews from Stereophile and The Absolute Sound if you're interested in other opinions.  Sorry if I'm just making this harder, but best of luck in whatever you decide. 

I've only heard the Belles Aria and, briefly, the PL Dialogue. The Dialogue impressed me; but I don't recall the speakers. I would have bought the Aria if it had balance control. My ears are not equal. I listened extensively with Vandersteen Treo CTs and ProAc monitors. It was really nice. I wound up with the Primare I32 and couldn't be happier. Sounds better to me than the Aria or it's big sister, the Soloist. 

Quality is probably the least issue with the Yamaha. The headphone stage is excellent. It is a rock, but if there is an issue it would be power. It's 90 wpc @ 8ohm can make your speaker choice an issue. My current speakers are inadequate, and I'm shopping for what will give me the best performance at that power level. 

There have been threads on here about Yamaha integrated's needing to be sent back straight out of the box.  Fortunately, bought through a real store rather than a dubious website.  Personally, I would have thought "boutique" manufacturers were a better bet for back-up.  Would you rather deal with a caring person in Pittsford, New York or a large, multi-national, Japan-based corporation?