My Bride and I made our way over for our maiden voyage. I had mapped the Value Steak thread and after discussing a few places we both had a need for beef. After a few recommendations here and there we decided this would be the place to visit and after a
strong recommendation from ucjames on what to order (Vacio) our meal was planned.

Vacio for two at Tango Sur

Nicely browned with Sweet Potatoes

Stuffed and topped with a butter, garlic and herb mixture

Recommended angle of attack? Slice off a 1/4 to 1/2 inch slice and plate. Cut off a bite, swirl around in the au jus, eat and repeat.
Was it like tender like butter in your mouth? No.
Did you need teeth to eat it? Yes.
Was there a tiny bit of gristle? Yes.
Was it the most awesome preparation for this cut of meat? Yes. A rich beef flavor.
We just couldn't stop eating it. The perfect marriage of garlic, butter, beef juice and meat kept us eating and purring. The rest of the room faded away and we had a private party. Just My Bride, me and the meat.
We arrived and put in our name and were told that there would be an hour and a half wait(do they take reservations now?). Prepared we strolled down the street only to find that the dive sports bar had closed. No problem as there was an lively Irish bar just a few doors further down which was a good choice on St Patty's Day weekend.
Cullen's Bar & Grill3741 N Southport Ave, Chicago
(773) 975-0600
The Curry Chips looked awfully good but we knew we had a sizeable meal ahead of us so we settled just for a few Harps and enjoyed the atmosphere. Our call came after about an hour and a half. My Bride had her way to the table while I made a dash to the car for the Brazilian Brahma Beer I had chosen for the evening.
Was the place crowded? Yup. A bit noisy too. A young crowd with tables filled with bottles of wine. Groups of two having a romantic dinner. The restaurant dark with candles on each table.

There seemed to be several tables for 10 or more with a small room in the back that appeared to be available for a large group that is waiting for a table. A wonderful place for a group of friends to have a fun time.
The wait staff was great. Switching off taking care of the needs of the diners.
All in all, between the atmosphere, great food and service, the best meal I have had in a long time. The price has to make this the best flavor value in the city.
We are counting the days until we can go back.
"Very good... but not my favorite." ~ Johnny Depp as Roux the Gypsy in Chocolat