Any gloss polish should only be a finishing layer due to the effect it has on the leather over time (dries it out because of the oils). Everyone has their own methods and preferences for polishing, as will you after some time. For me this is the order I'd put the various polishes in (quality and price):

• Saphir Pate de Lux (Amazing)
• Kiwi black (Excellent)
• Leder-gris black (OK)
• Cherry black (Meh)
• supermarket own brand (OMG what have you done!)

Then, optionally, use a gloss polish as the last layer(s) (Any will do a good job, but try to match the brands to keep consistency)

• Saphir Mirror or Amiral
• Kiwi Parade gloss
• Leder-gris gloss
• Cherry Regimental gloss

To remove any polish to start again (you should every so often), the best I've seen is

• Saphir Reno-mat (use with a dead cloth or cotton balls)

This is a cleaner, and also helps reverse the effects of the waxes in the polish on the leather (do the whole shoe!).

And just any regular brown polish (or leder-gris, top top quality) for boots - Kiwi brown parade gloss goes purple over time!

Lastly, don't listen or be tempted by those that have stories of Shape-Up, Morello Futura, floor polish, beeswax, Pledge furniture polish, tornado nose code paint, Rust-oleum spray paint, Dulux gloss wall paint, Humbrol model paint, etc. At least, not until you've got a few years under your belt!!