I understand your concern as it is a lot of money. I have been trading forex for 10 years and have used both XM and Pepperstone among other brokers.
What I found was that XM were great at offering you all of these different promo offers like 50% bonus on your deposit. Which sounds great but have a lot of terms and conditions to them that no one ever reads. However you make some money and withdraw it and watch how quickly they whip that bonus away from you. It is designed to keep your money there long enough for you to lose it. The broker itself is ok with low spreads and quick execution which I suppose is good if you are running EA’s.
However, once I started actual manual trading I needed more and somehow ended up at Pepperstone. Now this broker doesn’t try to lure you in with all the glitzy offers, however they do offer a great service, low spreads, low commissions and quick execution. I have had an account with them with over £20,000 and had no problems at all, withdrawals were swift which is what you want and I felt like my money was safe.
I no longer use them anymore but would recommend them. My favourite broker is Tickmill I have been with them for over 5 years and have never had a problem. Again they offer low spreads, quick execution, fast withdrawal, and great customer service. However, what keeps me there is they still offer 1:500 leverage if you qualify as a professional investor.
Why is this a big deal?
Leverage of 1:500 is very difficult to get now days If you are not aware. This enables me to open larger positions with less money, which I like. A word of warning and one I must give you. Leverage is a double edged sword, it can help you or hurt you. My advice is you learn about it and money management so you can use both to your advantage.
I hope this helps, a link for Tickmill is below: