Yes, I have an external 1400 lph EF. They are fantastic filters. Great value for money.
I have a Juwel Rio 125 too. I would recommend you do what I did and get the 1400 lph.
I run my external alongside the Juwel internal filter
APS externals is that they can be a pain to prime
Great value for money.
I like them. I have one, but for value for money, do bear in mind that they're power hungry for what they do, and the cost adds up considerably compared to some of the economical filters you can get if you're paying the electricity bill. After crunching some numbers I worked out that some of the eco running filters worked out far cheaper over a year, despite the much higher purchase price, so worth doing some maths.
I do use the spray bar for the external. But I also have the internal filter. It's not too much flow- the fish love it!