Yes, TK's program is truly fantastic. 100% miles on all tickets, easy tier levels, great award rates, and upgrade vouchers that actually clear as long as there are seats available. None of those borderline criminal scams that LH try to pull, e.g 2 vouchers to upgrade 1 flight, etc.

Sure award availability may be poor on some routes, and the fuel surcharges are high (but not as high as LH), but it's still worth the tradeoff.