Lexus IS250 – Experiences, opinions, costs

Hello guys, I’m thinking about buying a new car at the end of the year. Besides other vehicles, the Lexus IS250 is also on my list. I didn’t have a Lexus so far, but I know Toyota very well and was always convinced of their quality. I would import the car from Germany and have selected two typical examples from mobile.de:http://suchen.mobile.de/…/186433268.html?…http://suchen.mobile.de/…/197474971.html?… Now I would like to ask a few questions about the model series: What types of equipment were there or which is the highest (luxury line?)? What is the consumption? What is the quality or repair vulnerability? What are the costs for spare parts? Is there perhaps an online maintenance manual or such? So the information when you have to change the oil or timing belts, etc. What are your experiences or opinions about this? I would like to keep the car longer (timely and in relation to the km) and would like to inform myself in advance a little bit. …and would the GS300 (BJ2006/07) be a recommended alternative? Thank you very much.