Comparison Matrix Between Home Editions of Sophos UTM & Sophos XG Firewall

I just learned of Sophos' Home Editions of UTM and XG on last Friday (10/6) so I'm still scratching the surface here so I apologize if this seems like a completely ignorant post.

Seems like there's some overlap between both products, but I'm having a hard time wrapping my head around what is or isn't included.

• What's present/missing between both solutions

  • Feature	UTM	XG
    Increase Internet Bandwidth	Y	Y
    Web Filtering	Y	Y
    Access Schedules	N?	Y
    Usage Quotas	N?	Y
    Mail Filtering	Y	N?
    VPN	Y	Y
    AV Scanning	Y	Y
    Site-to-Site Tunnel	Y	N?
    And a lot more - what's this mean?	Y	Y

• Differences between the home product versus the paid/subscription product
• Setup documentation be it physical or virtual (Hyper-V, VMware etc.)

I'm interested in seeing how the solutions compares against Untangle, Security Onion & pfSense but I'm also interested in your feedback:

• if you've gone from UTM to XG
• if you're using bothUTM & XG (e.g.: hits XG first, then goes to UTM which doesn't have feature a bx c .. N because XG is doing that etc.)
• if you've used Untangle, Security Onion or pfSense
• any other bits you have for me

Thanks in advance for your consideration.