You can safely wear firm or hard ground boots on Artifical Grass playing surfaces, as I have done for many years.
However, alot of people call all artificial grounds astro turf which is misguided.
The carpet type surface is not good for studded boots, and you should only wear astroturf boots (the kind with many tiny rubber studs) on these grounds.
If the ground is artificial but with blades of artificial 'grass' you can wear these boots no problem, n fact, you SHOULD wear those boots.
Have a good game.
The difference is in the use which is in the name soft ground cleats are designed for soft wetter surfaces. For example you want soft grounds when it is raining or when you right after it rains. The reason they are better for that is they have longer studs and most of the time have fewer amount of studs. Firm grounds are good everyday cleats. you wear these on a daily bases when the ground is dry but not rock hard. These cleats come in many different designs and stud patterns but teand to have sort and more studs then soft ground.
Nike Mercurial Vapor Superfly 2 Firm Ground Football Boots
The Adidas Copa Mundial Mens Football Boots are the most popular ... Durable Firm Ground outsole for firm natural surfaces
Standards rugby boots are fine for all terrain types its the studs that change from long to short for very firm ground
Adidas F30 TRX Firm Ground Lionel messi use's them
Your best bet would be to purchase boots with interchangeable (quickchange) cleats.
firm
Standard boots with all heel studs in the sole. These will be multi purpose < you're so funny -_-. I would say Adidas Predators or AdiZero! :D
FG- Firm Ground- your typical cleats for mostly any surface. HG- Hard Ground- mostly for very hard/dry surfaces and artificial fields/astro turf. SG- Soft Ground- for wet surfaces, like mud or when raining.
You can find all the information you need at this website, http://www.livestrong.com/article/379539-what-is-the-difference-between-hard-ground-firm-ground-soccer-cleats/.
the top firm in London is Chelsea head hunters
David Beckham
David Beckham