It really depends on what you want the machine to do. I learned to sew on an old cast iron singer that my mom had. It was a work horse and did great for straight sewing. I took sewing classes in school so she thought we needed a "better" machine. It had a foot peddle and, decorative stich option by use of "cams" It was okay but had a very sensitive tension so was a bear to work with. Then she bought Brother machines at Costco. I never had any luck with them. They were always breaking down. In 2000 I bought a cheapo Janome Harmony ($125) made specifically for Sears. i learned to quilt on it mainly SID and just lines. but it is also my goto machine when I have heavy duty sewing to do (outdoor furniture cushions, etc.) However, I must say my dream machine has been my Bernina 440 Quilters edition that I purchased in 2000(?) It took to me a while to justify buying it because of the cost ($3000) but I love this machine. It does everything I need or want it to do. I am learning FMQ with the BSR foot. Very easy to clean and learn on.
My advice is to really think about what you want to do for the next few years with the machine. Try them out at the stores. Make sure it is in you budget. Then go for it.