U1 or U1 mini best for my setup


I’m fairly new in hifi so I thought I ask the pros here for some advice.
I would like to get a transport to replace my mac mini/Audirvana/MicroRendu setup.
It will feed my Chord Cutest DAC - Rogue RP-1 Preamp and then to my Rogue Magnum II tube amp.
My speakers are Vienna Acoustics Mozart Grande SE and a Rel S510 sub.

My question is my system high end enough to benefit from the extra cost of the U1 over the U1 mini?
I listen to mostly Jazz, smooth jazz type stuff. I have a library of redbook all the way up to DSD.

Thank you
al210
My mistake neither have a DAC. Looks like the U1 can upsample to higher rates than the Mini which your DAC would need to support. 
So yes I have my own DAC. Chord Cutest.
i have a chance for a new U1 for $4450 or used Mini for $1800
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