Yes most of the interference tended to be in the UHF airband ( Mil Air) as that was my main interest. However I`m also playing with DMR now which is usually in the 450mhz and up so I might try my RSP1 or even go for the flightaware at that price. Thanks for the infoI've used various netbooks and laptops with SDRs over the years and haven't noticed much in the way of interference/noise issues. Probably doesn't hurt that I tend to monitor 400 MHz and up - much less noise to find there than down at HF/VHF.
Speaking of, if your monitoring tends to take you to 400 MHz and higher, the orange FlightAware Pro Stick dongles have very good sensitivity up there. These days, I tend to use them exclusively. IIRC, they cost about $25. Hm, Amazon has them for 25% off right now:
Amazon.com: FlightAware Pro Stick USB ADS-B Receiver: Electronics
Amazon.com: FlightAware Pro Stick USB ADS-B Receiver: Electronicswww.amazon.com
All the best
Paul