Auralic Aries G1 = Transparent sounding (High resolution, not much bass, perfect for tube amp.
Intel nuc i7 with Roon rock = Close to Aries G1 but you get more options doing DSP and upsampling.
Innuos Zen MK3 = Best of them all, the tonal balance is great with the right amount of bass region. However, there's no official app for Innuos. You will have to buy roon or others anyway.
I owned 3 of them (already sold the G1). At this price point, Zen mk is the best.
I did try Aurender but it cannot use with Roon. Very disappointed about this. People may say its Conductor app is better than roon in sound quality but we all know ROON UI AND EXPERIENCE IS THE BEST IN THE INDUSTRY.