So far my 15" i7 hasn't had much heat issues. Everyday things, virtually no heat.
Now when I was using HandBrake, it got quite toasty. 😉 (See attachment)
But that was with the CPU running at literally 98-100% and being overclocked. So, they can get hot, but I just turned a portable fan on and pointed it at my MBP and it dropped the temp to the mid 80's.