I'm about halfway through PPL myself and use the Sennheiser HME 100 headset. Got a good deal on eBay. I've had no issues, it's clear and serves its purpose. Like yourself I'll be looking to upgrade when I do further training.
Ditto. Nearly at the end of my PPL and also using the Sennheiser HME100 which I picked up in 'as new' condition at less than half price on Ebay.
They aren't ANR, but they are very comfortable and far more effective than the club headsets. I can imagine if you were going to be training towards an ATPL every day you'd want something better, but for a weekend flyer they suit me fine!