lack of good execution is normal for times of high volatility but if it happens too often, then it's sufficient reason to change broker. Sometimes I encounter execution problems with Hotforex but generally conditions are good and I keep close eye on it.
Not really. Its more like a startup broker with very good reviews, but does not have a long track record to be tagged reliable. Maybe if the are still in business after a few years can be considered. Started using Forexchief not quite long and they are a good option.
I used this broker for 6 months bad after bad experience move to Tickmill and Hotforex, split deposit between those two. The problem I had with Admiral is big slippage during news they handle news orders badly, maybe the server is overloaded.
I'm currently trading at Exness. It's great. The spread is low. The execution speed is fast. If you want to know more about Exness, you should check out its detailed review on BRKV Forex.