Am not exactly sure what is meant by "monitor-style", as this can mean many things from physically small to painstakingly accurate. Efficiency and sensitivity are another matter entirely.
I have responded in a number of other threads with the same response to such a query: ELAC DEBUT B6. For the price, performance and money, one would be hard pressed to find a speaker which does more for less. At just under $300.00 (not incl tax and/or shipping) these could be the perfect match for the IDA8.
Unless you are willing to shell out a lot more money, or have some visual aesthetic in mind, I don't know of any other pair of speakers bought NEW which would seal the deal for you. You can comfortably grow with these speakers for some time to come as you learn about and audition "non monitor style" speakers down the road.