How much effort (money, energy) does it take to turn NGL's or condensates into gasoline products, compared with heavy crudes?  There's some asymmetry, because I assume it's easier to turn NGL's and condensates into useful non-gasoline/diesel products, whereas heavy/sour crudes pretty much are destined for gasoline or diesel products.

I would like to see more analysis of both CTL and GTL technologies.  Costs, EROEI, scalability, expected growth rates, years to peak production, etc.  In particular, GTL has seen very little discussion compared to the competing technology of LNG.

Qatar is currently receiving huge capital investments for both LNG and GTL facilies.  I've seen a few analysts briefs that conclude that in most circumstances it acutally make more sense to build GTL plants rather than LNG supply trains.  The end product of GTL is ultra low sulfur diesel that requires no further refining.  No specialized LNG tankers or controversial LNG regassification terminal are needed for GTL.  It will be interesting to see which of these once obscure technologies, LNG, GTL, or CTL, will grow fastest as it becomes clear that the easy oil has peaked.