I bought
this scale because it takes up very little storage space and is from a reliable brand. It's working out for me nicely.
Meanwhile, a screenshot of my weight log for the past two months may give you some idea of how daily weighing works out.
As you can see, the general movement is definitely downwards. I'm losing at what is usually labelled 1lb/week (I know I'm having a whoosh right now, but I have no idea why it suddenly decided I was losing 1.29lb/week today), I don't have difficulty staying on my eating plan, and I reckon this is probably fairly mild weight variation, as such things go. If I was weighing every week, there are times when it could look as it if were going up, and I'd be uncertain whether it was just a blip for the next week or so. With daily weighing, I can look at the overall patterns. When my weight stalls a bit for a week or so, I can look at the previous times it's done that and how it always dropped again afterwards.
That's what works for me. Weighing is a very personal thing, and some people feel much happier weighing daily while others finds it drives them to distraction and is counter-productive. There is no reason why you can't change your weighing pattern once you start. Just see what works for you individually. The main thing at all times is to look at the overall pattern and not to get too caught up in minor fluctuations. A lot of liquid and solids go in and out of the body every day, I've heard 14lb, so with all that natural fluctuation due to eating, drinking, excreting and breathing, a bit of fluctuation on the scales is perfectly normal.