Quest Bars
Ok I have too many favorites to just pick one. Since I have a sweet tooth & these are my overblown candy bars, my favorites are: Chocolate chip cookie dough, double chocolate chunk, white chocolate raspberry, mint chocolate chunk, & cookies & cream.
Did I mention the sweet tooth?, especially chocolate lol 
If you go to the quest site you can buy individual bars or the variety pack. I'd suggest grabbing a bar out the store first in case you're sensitive to sugar alcohols, it has stevia & erythritol in it. They changed their formula lately so it might not affect you.
No one surgery is better than the other, what works for one may not work for another.
T-Rebel
I get your want for chocolate. I have the same problem. Lately I've wanted dark chocolate. I've been eating Pure Protein bars but am wanting a variety. I know Quest bars are high on the list for being good ones for us...as are Pure Protein.
67 yrs old, 4'10", BMI 31.8 (51.8 at start), HW 256.4 (8/4/15), SW 217.4, CW 152.8 (4/30/18), GW 125.0, RNY 12/4/15 Dr. RoseMarie Jones, Breast Cancer DX 2/16, Bi-lateral mastectomy 8/9/16.
Peanut Butter & Jelly
Chocolate Chip Cookie Dough
Peanut Butter Supreme
New Quest Labs flavor - Oatmeal Chocolate Chip
Lanie; Age: 43; Surgery Date (VSG): 8/12/14 w/complications resulting in RNY next day;
Height: 5' 6" SW: 249 Comfort Zone: 135-140 CW: 138 (10/13/17)
M1: -25 lbs M2: -12 M3: -13 M4: -7 M5: -11 M6: -10 M7: -7 M8: -7 M9: -3 M10: -8 M11: -4 M12: -4
5K PR - 24:15 (4/23/16) First 10K - 53:30 (10/18/15)
I like them all as cookies: http://theworldaccordingtoeggface.blogspot.com/2015/07/quest -protein-bar-cookies.html I don't even eat them as bars anymore... better portion control. 1 bar = 8 cookies, I eat 2 for a serving.
Favs though... hmmm chocolate chip cookie dough, s'mores, apple pie, vanilla almond crunch.
