Full list of jets with >2900nm range available in AirwaySim Jet Age scenario : DC-8, DC-10, L-1011, 707, 747, Convair 880/890, Il-62, Tu-114 (not a jet but very fast for a prop), VC-10/Super VC-10
First (and extremely thirsty) DC-8 intercontinental versions (32,33) should be announced very soon.
In fact Boeing 707 has now a little advantage if you want to fly longer routes and a big advantage if you want to fly mid range, but later Boeing will lose all advantages and DC-8 are much better in every way.
707 or DC-8 is the only situation in the game where you must take disadvantages now or later for your long term strategy by choosing one of the fleet groups. Only chance to avoid this is using both...
PS: Due to massive offenses by other uses I'm not giving away more and detailed information about future aircraft, but if you have a specific question, send me a PM.