There are a few things to look out for when buying a scale. Some are fairly obvious, like capacity. Others aren't, at least the first time you buy one, like "can I read the display with my most-used mixing bowls on it? " and "does it measure small quantities well?".
A capacity of 5 kilograms (11 pounds) should be enough for anything a home cook is likely to do. It's not hard to find a scale that's got a display that's readable with a bowl on it, with an acceptable amount of bending. Make sure you get one that measures to at least the nearest gram, and if you're using ounces, will display that level of accuracy there. Many scales only show to a tenth of an ounce, which is nearly 3 grams; you want one that displays 0.05/ounce increments.
There are a couple of features that are handy (and pretty close to universal). One I'm very fond of is negative weight. Put a container on the scale, press tare, and remove the contents until it displays the quantity you were after. That's very handy for splitting batters and doughs into portions or loaves.
I'd broaden your search beyond Salter. Both My Weigh and Escali make nice scales that are nicer and priced about the same as most of Salter's stuff.