Honestly, i'd recommend spending £100 on a DA polisher and some good polishes, cleaning materials and waxes. I get all my stuff from either Auto finesse or chemical guys. Both are sensibly priced aswell. Pads for the Da polisher are relatively cheap and are well described on the websites as to what there purpose is. I bought myself a polisher, pre-wax cleanser(polish), wax etc etc and went for it myself. I played it safe to start with and just used a polishing pad so I could get used to how the polisher works with the products and how I can work with the polisher. I personally found it easy to use and even with just a pre-wax cleanser instead of a cutting compound and a polishing pad instead of a cutting pad, I saw a huge decrease in swirls, holograms and marring in my paintwork as well as an incredible gloss to the paint work after. There are numerous tutorials on how to use da polishers with certain products etc. Look up chemical guys on youtube, they do some easy to watch and easy to understand simple tutorials, whether it be a full paint work correction to perfect the paint or a quick correction to remove 80-90% of swirls and fine scratches. Some detailers depending on their rep can charge ridiculous prices for full paint corrections. I'd say the best thing to do is keep on top of it yourself, practice safe washing techniques and detail your car when it needs it. That £100-200 worth of polisher and products will pay for itself time and time again.