I'm getting sick of shopping for headphones I think this trio will suit me right. As of now I only own Apple buds, and Sennheiser MX400s (from eBay... I think they're knock offs). Earphone Solutions seem to be a respectable online retailer, and I'll be getting my UM1's from them. But what about Head Room (headphone.com)? I plan to get both the PK2s ($69.99US) and PX100s ($49.99US) from them. Are these a good choice of headphones for a newbie?