First, welcome.
Some of what you've asked has been answered, so I'll try to parcel out what's remaining. Kits are not necessarily better than going from scratch. One difference, though is the ease in selecting exactly what you want. For example, there's French, Australian, or California chardonnay without oak, with oak, or with toasted oak.
There are several good and readily available wine kit brands: Cellar Craft, RJ Spagnols, and Winexpert (the largest) are among the favorites at this forum. Each brand has levels of quality from ultra premium, to premium, to value. Generally, the better the quality, the greater the amount of concentrate and/or juice that's included, and the higher the price. There are also limited edition and specialty wines you should consider.
The basic exercise is to find something you may like, at a relatively high quality, and at a price you want to spend. Many people ask for forum recommendations on kits they're considering or read earlier posts. After reading comments here, I recently started a Spagnols Super Tuscan.
One last comment, try to find a local wine making supply store and get information from them, too.
Tony P.