I was surprised but also very pleased by the heft when I first handle one too. As you say perfectly manageable to carry but has a satisfying feeling of solidity to it. Try reversing the hamster, drop it out and put it in the other way round, I find it even comfier!
You may get your wish, that 10fps could be there after a couple of tins have gone through it to bed it in.
HFT, for people with only 2 buttucks!
VooDoo TwoTwo The next chapter.