I don't have a favourite brand or style. I always buy what suits my needs. Always have a bra fitted when purchasing, a comfortable bra is essential. Even if I am purchasing a brand that I already own I still like to have it fitted. The store fitter's check and even adjusing the straps correctly I found was impotant. Often when I purchase a new outfit I will take it to the Lingerie store to find a bra that suits the cut of the top. I do prefer underwear with feminine touch, ie lace bra cups and front lace inserts in my panties, just a touch that I like. Same with panties they need to be comfortable, I do prefer high cut panties for everyday, (work skirts ),bu thave a fair selection of all types pending on the type of clothes, jeans, shorts, lighter or latte colours for more see through shorts//pants definatly no black. I do not find a g string or thong comfortable, and the few times I tried them I could not wait to get them off and fit a bottom covering set of panties.
As for styles that more suit mtf girls. I am not sure if there is a style that suits everyone. I found when pre op certain panties were uncomfortable or ride up my bottom, I thought it was my being pre op and just keep searching for panties that were comfortable, same with comfortable bras during initial hormonial breast growth, as the breasts settle then you will find bras are and can be comfortable. Even now post op there still is the issue of some panties are comfortable, some still ride up my bottom, some still roll around the waistband. Everything fits different pending on your body shape. I even find sizing to differ between brands. The best advice Ican offer is to be fitted correctly, I usually even try panties before purchasing, naturally leaving my panties on underneath. A good relationship with a lingerie store is essential.