The best brand of road bike is the one that fits you well and you enjoy riding. Your best bet is to go to a Local Bike Shop (LBS) talk with them, look at options, ride several models, then go to another LBS. The point being you need to find out what is out there and how the LBS treat you as a new rider. You probably need to have a budget in mind since some of these bikes are very very expensive! When you buy a bike, the LBS you buy from will do repairs and have accessories for you to buy, so think of it as a long term relationship. With respect to brand, if it is being sold in a LBS, it is a decent brand. Some bikes won't fit you well, others won't be aesthetically pleasing to you. Keep looking until you find the one that makes you smile. Also, you might fit better on a unisex bike (formerly called mens) than a Women's Specific Designed one...try both. Enjoy the hunt for the perfect bike for you.
P2
2018 Trek Silque SLR6 - Selle SMP Glider
2018 Specialized Dolce EVO Comp - Selle SMP Glider
2011 Trek Madone 5.2 WSD -Selle SMP Glider
2013 Giant TCX W - Oura 143