Izzo Alex Duetto IV Plus vs LUCCA M58 Sunto Espresso Machine with Flow Control

Same class, different tax brackets.

About US$493 apart — the split below is what the gap buys.

Izzo Alex Duetto IV Plus

Izzo

Alex Duetto IV Plus

US$2,799–2,950

The Duetto IV Plus is a well-built, rebuildable dual-boiler machine from Naples that competes directly with the ECM Synchronika and Profitec Pro 700 while typically undercutting both on stre…

Full record & live prices →
LUCCA M58 Sunto Espresso Machine with Flow Control

LUCCA

Strong consensus
M58 Sunto Espresso Machine with Flow Control

US$3,295–3,440

The M58 Sunto with Flow Control is the highest-expression version of Clive's flagship: it brings genuine dual-boiler thermal stability, flow profiling, and a genuinely quiet rotary pump to a…

Full record & live prices →

The split

Where they actually differ

On 10 of 11 measures these two tie. The single row below is the entire argument.

Alex Duetto IV Plus

M58 Sunto Espresso Machine with Flow Control

Ready when you are

M58 Sunto Espresso Machine with Flow Control leads, decisively

~20 min· ~12 min

The price

Alex Duetto IV Plus costs less, clearly

US$2,799–2,950· US$3,295–3,440

weakerstronger

The counter’s vote

Looks barely figure in either machine’s record — the counter can sit this one out.

Alex Duetto IV Plus: Utilitarian industrial aesthetic (72-pound stainless steel weight is feature, not liability); no award citations or kitchen-approval talk in record—design neutral to slightly dated in a market moving…

M58 Sunto Espresso Machine with Flow Control: Compact industrial form trades countertop charisma for brass/stainless workbench aesthetic; not polarizing but unremarkable—functional beauty, rarely cited as a buying driver.

Only the M58 Sunto Espresso Machine with Flow Control: flow control.

Where they tie: milk & steam · shot ceiling · back-to-back drinks · reliability record · forgiving to learn on — don’t let a spec sheet invent a difference.

So — which one?

Take the Alex Duetto IV Plus if —

  • The difference stays in your pocket — or goes into beans

Take the M58 Sunto Espresso Machine with Flow Control if —

  • Patience is not your virtue at 6 a.m.
  • You want more dials, not fewer

The measured differences here are small; the price gap is not. Take the Alex Duetto IV Plus and put the difference into fresh, roast-dated beans — they move the cup more than this split will.

Known weak points

Alex Duetto IV Plus

Long heat-up cycle via thermosiphon (reported ~1 hour full transfer to group) is workflow constraint rather than failure, but limits convenience perception; no widespread failure modes documented in available owner record.

For the row-by-row readers

The whole sheet, side by side

Matching rows fade back — the ink is where they differ.

Alex Duetto IV Plus

M58 Sunto Espresso Machine with Flow Control

Type

Dual boiler

Dual boiler

Heat-up time

~20 min

~12 min

Steam power

4/5

4/5

Brew + steam at once

Yes

Yes

Guest recovery

4/5

4.5/5

Shot quality ceiling

4/5

4.5/5

PID temperature control

Yes

Yes

Milk system

Manual steam wand

Manual steam wand

Removable brew group

No

No

Hot-water tap

Yes

Yes

Cup clearance

14.6 cm

0 cm

Workflow demand

4/5

4/5

Maintenance

3/5

3/5

Noise

2/5

2/5

Build longevity

5/5

4.5/5

Dimensions

36 × 44 × 42 cm

Flow control

Yes

One owner each

The machine takes about 1-hour to fully transfer its heat from the brew boiler to the E61 group via a thermosiphon circuit of relatively small diameter pipes.
BaristaBoy E61on Home BaristaRead the source →
"5 years later and I see no reason to upgrade. The beauty of the machine equals the performance."
Verified buyeron Clive CoffeeRead the source →

Wrong match-up? Change one side → — any two on file compare.

Still torn?

This page weighs them against each other. The finder weighs them against your mornings.

Two minutes of questions — milk, noise, budget, space — scored across everything on file. It’s honest when the answer is neither of these.

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