You will definitely notice a difference when going to a steel braided brake lines. Especially fronts.
I went with Russell's '07 front end kit. I had nothing but issues. Not with the quality, but with the length. They are extremely short, and their customer service rep argued with me that I screwed it up. I ended up measuring a slightly longer line than necessary, and shuffling everything over.
Previous poster is very correct. Now is an excellent time to rebuild calipers. You should only need replacement rubber seals.
Partzilla has an absolutely excellent video on YouTube with just about every step highlighted. I believe he also did a front and rear master cylinder rebuild video as well.
My only cautionary statement to pass on, is the inherent rigidity of the steel lines. You will have to be very patient and observant when clocking the new lines.
Feel free to ask questions. There is a TON of knowledge on here.