You can always choose whatever leverage you'd like to have on a Zero or Classic Account. The maximum leverage we offer is 500:1. The outcome will be different, depending on which you'll apply. The more leverage you trade with, the less margin is required for your trades. 100:1 means you only have to put down 1% of the value of the trade, whereas 200:1 means you have to only put down 0.5% for the trade and so on.
For example, we trade EURUSD on a 100:1 leverage, this means that you'll have a margin of 1121 on 1 standard lot (MT4 volume of 1.0 = $100,000 of notional currency). For 200:1 leverage, you will have 560.5 margins for 1 lot on MT4.
Please remember, the higher your leverage is, the higher risk you can assume. I recommend playing around on the demo to see what margin is required for each trade and setting up different demos with different leverage so you can feel for yourself the difference.