Hi, I'm going for my bike L's soon and wanting your thoughts on a suitable first bike. I have no experience AT ALL with motorbikes. The two bikes i like are the NSR150-SP and the Kawasaki ZZ-R250. Leaning more towards the NSR but worried about it being a 2-stroke. I've read alot of reports about seizing engines and having to rebuild every 20,000km's etc. If i buy one that has around 20,000k's on it that hasn't been rebuilt will i run the risk of getting a seized engine while riding it? Please share your thoughts/recommendations.