Learned on Javelins but I've done most of my jumps in France, so was used to the quirks of PdeF containers (reversed risers, minis, double RSL), so when I bought new I had a straight choice of Javelin or Atom. Went for the Atom Legend because you seemed to get a lot more for the cash. After 100+ jumps I find it incredibly comfortable (well, sure, it was built for me), and a few tweaks that make it better than the older Atom. Things like a redesigned closing flap making it freefly bombproof, extra flaps to stop your lines wrapping behind the reserve tray, and not one scrap of velcro. I'd advise hip rings - makes everything more flexible / comfortable. The build quality gets more impressive the more rigs I see. Long wait, and not so good on the exchange rate now, but still a terrific rig.