I've been looking up to Interactive Brokers (IB) and Lynx Broker for Four years or so. Even before Degiro came to Finland to offer their services. This week I opened an account at IB.
Lynx Broker is more expensive than Interactive Brokers if I continue investing like I do. Small amounts of money every month. US stocks cost 5$ per transaction with Lynx Brokers and 1$ with IB. Yes, IB costs 10$ every month but still, if I make 3 small transactions every month, IB is cheaper. Also changing currency is cheaper at IB.
Why not Degiro
I've probably been reading too much amsterdamtrader, but I have had some of the concerns from the beginning. What happens if HiQ goes bankrupt? I haven't found an answer to that. Also the 2,5€/stock exchange fee did come from no where for a lot of people. I do think the brokerage fees are overly priced overall and competition is welcome, I do hope Degiro keeps prices low and they still can make it a success.