Ale, Beer, Stout appreciation

These are the Belgian quads I've tried from untapped:

Sint Amatus - Oostvleteren 12 (2013)
De Struise Brouwers
11% ABV

Brouwerij De Prael
Belgian Quad
11.5% ABV

Préaris Quadrocinno (2015)
Vliegende Paard Brouwers
10% ABV

Grimbergen Optimo Bruno
Brouwerij Alken-Maes
10% ABV

Malheur 12°
Brouwerij Malheur
12% ABV

Keyte Oosténdse Dobbel-Tripel
Brouwerij Strubbe
9.2% ABV

Préaris Quadrupel
Vliegende Paard Brouwers
10% ABV

Kasteel Donker
Brouwerij Van Honsebrouck
11% ABV

Trappist Westvleteren 12
Brouwerij De Sint-Sixtusabdij van Westvleteren
10.2% ABV

Quintaceratops
Brooklyn Brewery
10.9% ABV

Gulden Draak 9000 Quadruple
Brouwerij Van Steenberge
10.7% ABV

Komes Poczwórny Bursztynowy
Browar Fortuna
10% ABV

Three Philosophers
Brewery Ommegang
9.7% ABV

Abt 12
Brouwerij St. Bernardus
Belgian Quad
10% ABV

Monk's Brew
Mikkeller
10% ABV

Trappistes Rochefort 10
Abbaye Notre-Dame de Saint-Rémy
11.3% ABV

Monk's Elixir
Mikkeller
10% ABV

Stochasticity Project: Quadrotriticale
Stone Brewing
9.3% ABV

Abstrakt AB:16
BrewDog
10.6% ABV

Partizan Brewing
Belgian Quad

There's another bunch that come under Belgian Strong Dark Ale that would also probably suit your tastes but I'd have to find extract tasting notes for them all and ICBF.