1) If it wasn't documented on your account, or in some written form... You are fighting an uphill battle... but you should at least try.
2) What did you pay for the HR10-250 is going to play a major factor in what kind of deal you get on the HR20-700
3) Only you can decide for yourself if it is worth the cost... based on the feature set.
2) What did you pay for the HR10-250 is going to play a major factor in what kind of deal you get on the HR20-700
3) Only you can decide for yourself if it is worth the cost... based on the feature set.