Reliable Broker with low spreads and high leverage on Indices

Hi,

Iam on the search for a good and reliable broker to trade the US30 and GER40 Indices.
Currently Iam trading with TMGM (Trademax) because they offer me a 1:500 Leverage and very important for me, mini lots!
The only downside is, they offer a spread of 3-4 Points on both Indices and this is way too much for me as a scalper!
Another point is, Iam based in Germany and any EU regulated broker just offers a 1:30 lev.

Does someone has a good recommendation for me?

Just stick with Tier 1 brokers.

How to determine if a broker belongs to group of Tier 1 brokers? Trading conditions and broker ToS are roughly the same.

luckily there is a couple options for europeans that allow trading with better than 1:30