as for me guys, I am thinking of going GURPS. I am fed up with supporting Traveller lines for them to simply evaporate by having their support withdrawn, I haven't much liked the T5 playtest files I've seen and as for RTT being based on classic traveller, I think, 'What's the point' we've already got Classic Traveller. I'm really annoyed that the T20 license will expire and am worried that Mongoose will be another Imperium Games, light on quality and big on rip off (we've seen the press release re:760 patrons).
With Gurps however, you don't see this, their traveller products are great, they are not afraid to differ slightly if it makes sense and thereby bring new things to the Traveller universe, they have a reliable production schedule, minimal errata, great illustrations and are generally quite well written, everything I've downloaded has been good enough to make me think of buying the dead tree version as well for ease of browsing and reference.