Those are good practical inputs. To judge the quality of the receivers I recommend you check out the following sites. It's interesting reading and will help you make a good choice.
Receiver Comparison Data: http://www.w8ji.com/receiver_tests.htm
More comparison data from Sherwood Engineering: http://www.sherweng.com/table.html
receiver test methods: http://www.w8ji.com/receivers.htm
Happy hunting & 73 de kt8k - Tim