Sony G lens vs Carl Zeiss quality....
the TX1 has better image quality then the WX1 .... Carl Zeiss vs Sony's G
comparing total different lens designs makes it hard to say whats best.
in general more zoom range... means more compromises.
how this is going to translate in the HX5 vs the TX7 nobody knows.
in the past the T series alway's have been very good camera's.
also i think choices should be made on your shooting needs and what you find acceptable image quality.
All my Post Processing is done with Capture NX2