I did a lot of research before buying a sewing machine, here are few good models you would like to have a look:
Basic Range:
Singer Tradition 2250NT
Janome Decor Excel 20
Brother JK1700
John Lewis JL110
Middle Range:
Singer Talent 3323
Janome 7025
They have some very good features and are best for their price. I chose singer simply because I used it earlier and found it quite good. You can buy sewing machine foots (see below image) for interlocking, hemming, cording, embroidery, quilting etc.
