you can read quite a lot of peoples opinion on this charger.
I have one.
Yes, it has good features for the money. And yes, it tend to heat up the cells. Most of the time, I'm charging in ambient temperature of 17-18 degrees celsius, so it's not a real problem for me.
But at ambient temperatures of 23-25 degrees celsius, I would strongly recommend to get another charger.
The reason for it pushes the cells harder, is due to the VSEC. It charges for 55 seconds, pauses for 5, charges at 55 etc. etc... The problem is it only looks for the peak within the 55 seconds. So if the pack peaks slower..... pretty hot pack. I've tried charging a single AA 2300 NiMh at 1 amp, 0,03 mV cut off.... The charger passed didnt stop and charged through 5-6 hours.... Fortunately the cell didnt blow up.
If used properly, it's a good charger, but I wont buy another one. It's not reliable enough
Besides, there's a lot of new chargers on the market: Integy is coming with a new one, Orion Advantage, Duratrax Ice, MuchMore CellMaster, Robitronic, Pitbull....