I agree with the battery life and if it is not very rugged but you'll have to be more specific than….

different design parameters and trade offs

…. to change my mind about the accuracy. With an external antenna ($19) I get an accuracy of usually 7 feet.

I’ve found every “trivial” cache I was after, except one . Granted I’ve only logged about 50.

I agree the battery will only last about 6 hours if you “conserve” power however one cache hunt usually does not last that long and the PDA is back in the car cradled talking me to the next cache while recharging.