(T42 vs T43) vs R52 & 14.1 vs 15. Purchase advice needed

[bzzz]

Mind taking a good, high quality recording, of both and comparing them to mine?

Probably. some day - T43 isn't mine.

Mine has now been on battery for two hours and has hovered around 38-41 degrees with the fan at Level 1 without having to use the Fan Control Utility.

34-35C at level 1 and w/o the utility. I don't think claiming any hours makes any sense because it depends totally on settings and load. I can say the lower rate I reached is ~7.5W.

Later, if you want I can measure and chart out the temperatures on my T43 and my friend's T42 and compare them again; I can guarantee there is little difference. After running them daily, they both feel lukewarm to the touch on the bottom.

well, on that T43 I never seen CPU temperature lower than 41C.

I'm not an expert, actually. Probably there are bad and good T43s and T42s. I'm just describing my impression.