Car pro wash mitt is the best I've used. Very light and easy to use compared to the overly cumbersome dodo equivalent.
Nothing wrong with autoglym products. Super resin polish followed by extra gloss protection is a fantastic combo, and the more effort you put in the better the results. Being thorough certainly makes more f a difference than having fancy products.
If you already have super resin polish I wouldn't rush out and purchase the new variant. I don't like it compared to the old one, although there's very little difference and I can't really add any weight to that preference at all.
You could look at their hd wax too, but it is far too expensive from the regular sources. If found cheap its not bad.
Otherwise just set a budget, and don't spend a penny more and do not be tempted by the next best thing you may read about on the Internet, particularly detailing world. Products don't jjst stop being good, but they do fall off the radar rather quickly, the autoglym products having suffered that.
I've spent £thousands on products, then sold most and kept one of each type of product and there's no real difference between a wax costing £20 or one costing £2000 beyond marketing and ease of use