REEGOR  TechTool conflicts with "Time Machine" (Mac's great backup program). It creates HUGE, multi-gigabyte, backup files for Time Machine every day. This slows down TM, and fills up your backup disk with junk.

The solution is to turn off TechTool's protection (in the preferences pane). Especially, turn off Directory Backup. After all, if you are running Time Machine every hour, as we all should be, we don't need TT's backup which sits on our regular hard drive and is therefore less reliable.

Once your turn off TT protection, what's left? The disk information and trouble shooting utilities. Ask me in 3 months if they are worth the price.  
(Version 5.0.5)

REEGOR  The 1.3 SMC update has an unclear effect on temperatures. (It brings me up to version 1.27f2 - go figure.) I was running up to 83C or slightly higher according to iStat, under moderate to heavy load. (The load was an external monitor streaming Netflix, Wi-Fi running at 150 KBps, and several applications. This does not seem like a heavy load to me, but I guess decoding a movie takes work.)

Tonight, I went up to 83 without even any streaming (but with an external monitor). But after a few minutes it has settled down to between 72 and 76.

Here's my complete temperature list for comparison. First number is first reading; second is 10 minutes after startup.

CPU A 82 / 71

Airport Card 51 /52

Battery 30 / 30

Enclosure Bottom 33 / 34

GPU Diode 82 / 79

GPU Heatsink 68 / 65

Heatsink A 62 /61

Heatsink B 46 /45

Memory Controller 52 /51

Hitachi Drive 21 /21  
(Version 1.3)