If milk based coffees are your thing then the Sage Dual Boiler espresso machine will work for you.
Separate boilers for coffee and steam give you a greater degree of precision and allow you to steam milk at the same time as your coffee is brewing!  You'll be drinking that flat white in no time.  The pressure generated by the steam boiler really helps you create wonderfully silky milk, which is crucial if you yearn to pour latte art. 
A dual boiler system also allows you to precisely control the temperature of the espresso shot.  At the Roastery we brew our espresso at 93.8ºC.

This espresso machine does not have a built in grinder so you will need to have a separate grinder alongside.  We pair ours with the Mahlkonig X54. 

Here are the details:

Precise And Repeatable Extraction

Dual stainless steel boilers and heated group head controlled by digital temperature control (PID) brings water to precisely the right temperature (+/- 1⁰C) to extract maximum flavour potential, shot after shot.

19-22 Grams Dose for Full Flavour

Achieve a consistent and balanced espresso using the right amount of ground coffee. The 58mm porta-filter with 19-22 grams is the key for full flavour and third wave specialty coffee.

Micro-Foam Milk Texturing

Steam wand, powered by a dedicated boiler, delivers micro-foam texture of commercial machines that enhances flavor and is essential for creating latte art.

LCD Display

Allows easy programming and has a shot clock for timing the extraction.

Flexible Shot Control

Choose between one shot, two shots or manual control over how much espresso ends up in your cup for the perfect dose every time.

Sage The Dual Boiler Black Truffle Espresso Machine Additional Information: 

• Dimensions (WxDxH): 37.3 x 40.5 x 37.7 cm
• Materials: Brushed Stainless Steel Exterior Stainless Steel Dual Boiler
  
• Capacity: Water Tank Capacity: 2.5Ltr.
• Settings: Manual or Automatic Single & Double Shot Personalised Temperature
• Warranty: 2-year limited manufacturer's warranty (Please note: Sage products covered by this manufacturer's Guarantee are intended for private household (non-commercial) use only.)