Responses from medium_grade

I need help choosing a budget phono stage gift
Hagerman Bugle3. It's right in your price points and, because it uses socketed op amps, you can upgrade it later by swapping out the op-amps with discretes (Sparkos would probably work best).   
Which DACs are known to be sweet/rich/relaxed?
Try a Musical Paradise MP-D2, get the DAC chip upgrade, Jupiter Copper Foil caps, GZ34 rectifier and 6SN7 tubes. That ought to do the trick.  
Cornwall IV – tube (amp) choice
Have someone build you an Elekit TU-8600 (with Lundahl transformers). Best money you'll ever spend.  
Whats on your turntable tonight?
Return of the Living Dead Soundtrack  
Every day I see another turntable recommendation...
Hit up Kat at Upscale Audio. She's very knowledgeable and, if you buy the cartridge from them, they'll set everything up for you as well. 
2nd systems- who’s got one?
Four here: office, home office, living room and garage. Garage is my primary.  
American Made Audio Products
Omega Loudspeakers are assembled in the US with us made drivers. Highly underrated underrated.  
Usb or Optical
It depends on the quality of the USB controller. I've seen some devices (Raspberry Pi) where it seems to make a lot of difference. I always go optical or Spidf whenever possible.   
Please Recommend Highly Efficient Floor Standing Non-Horn Speaker Suggestions
Omega Loudspeakers. They're beautiful, efficient and sound fantastic.  
MM vs MC Cartridges
I echo Fuzztone. Get a step-up transformer from Your MC cart will get the authority it needs.   
I need a subwoofer recomendation
If you can stretch you budget a little, Omega subs are great and they look great too   
A** Kicking, Rock and Roll!
Try The Bronx  
Speakers for daughter
You may be able to find a scratch and dent scratch and dent Klipsch RP 600M. Check Amazon. Those are fantastic with not that many watts required.   
Efficient speaker: Zu, Tekton, Volti, Klipsch, Fleetwood?
Omega Loudspeakers.  Wonderful full range speakers that are fantastically efficient.  
Modern "Vintage" Sounding Preamps
Big fan of the Tubes4HiFi SP14.  Rich and warm 6SN7 preamp ersand plenty of clarity in detail.