First:
Depending on the circumstance, I'd consider powered monitors. Takes the matching out of the equation as the work is done for you. Lots to choose from. I currently use BX8a-Deluxe at home and Blue Sky Media Desk at second location. Other will recommend different brands like Rocket, Tannoy, etc
Hard to say which would be the best fit for you. Room size, proximity, etc, all come into play.

Second:
I been eying the UR 44, but can't comment on actual use yet. Those Yamaha pre's are tempting.

Third:
Dunno about Sonic Sweet, but their Sonic Maximizer worked in RB and PT without issue here.
I no longer have it installed, but when I did it worked.


I do not work here, but the benefits are still awesome
Make your sound your own!