MSi B450 Gaming Pro Carbon AC at $130 (usually it's this much, though lately I've seen it occasionally spike to $150 which is where I'd start recommending X570 boards instead). Basically same great VRM as the Tomahawk/Tomahawk MAX, just doubled (uses doublers so it's 4x2 instead of just 4). Also swaps out Realtek LAN with Intel LAN and gives you an Intel 9260 WLAN card (2x2 Wi-Fi AC and Bluetooth 5.0; the Tomahawk MAX is usually $115 and the price of a standalone 9260 w/ an M.2 to PCIe x1 adapter is usually $30+ so it's a good deal if you wanted Wi-Fi or Bluetooth for anything). Also has a bunch of RGB headers.
Originally Posted by MSi
1 x 2pin LED Power connector
2 x 5050 RGB LED strip 12V connectors (JRGB1~2)
1 x WS2812B Individually Addressable RGB LED strip 5V connector (JRAINBOW1)
1 x CORSAIR connector (JCORSAIR1)
It has the ALC1220 but I don't really think you should ever consider onboard audio. The ALC1220 chip itself can give an SNR of 120 dB but every single overall motherboard implementation I've seen never even gives you a SINAD that's close (SINAD is a measurement that combines SNR and THD to give you the effective dynamic range. It's used to calculate the Effective Number of Bits/ENOB of dynamic range a circuit gives you). For example, the MSI MPG Z390 which has an ALC1220 only gives a meager SINAD of 88dB which is far below the 96-98.08 dB minimum (depending on your ENOB equation) to get 16 bits of dynamic range (the bit depths of the majority of audio files).
You'd only need a 20 bit ENOB/120 dB dynamic range if you're somewhere like an anechoic chamber for transparent audio reproduction since the noise in normal listening environments is higher than the -120 dB noise floor.
For reference, the $8-9 Apple USB-C to 3.5mm headphone adapter has a SINAD of 99 dB which is already audibly transparent in normal listening environments. It's more or less made every single DAC + Amp setup south of $150-$200 irrelevant unless you're driving high impedance and or low efficiency headphones. It's a USB UAC 2 devices so it's plug and play on Windows 10, macOS, Linux, Android, and iOS (some caveats on Android where some phones try to bypass the adapter's Cirrus Logic DAC+Amp+ADC).
Edit: The preference for Intel over Realtek LAN is mostly from anecdotes of people having more issues with Realtek drivers than Intel drivers. I don't think it's really anything to worry about.