Do not buy a new Singer, do not purchase a machine from Walmart....no service or warranty...you have to send back to the mfg. Check out pricing and features on the internet. Brubakerssewing.com...call them and ask about used machines or show machines that have only minutes on them. Check out pricing on Allbrands.com and Kens Sewing.
I would opt for a computerized machine, you have a mechanical one....there are a lot of them on the market now at reasonable prices. Janome has several. Check some pricing on the internet, then go to Janome.com and compare the models. Features are your choice. the ones I like are needle up, needle down;automatic thread cutter; zig zag a given with all computerized machines, throat space is a consideration as well. Just think of your needs, look online, compare prices and test drive. If you find a dealer you like, see if they will match online pricing without sales tax.
best wishes in your quest.