Edit, read only, disable, blur items. Which to use?

I've searched the forum and have found some threads that somewhat discuss my question, but none have addressed it specifically.
I have a page that has 20 or so items on it. There are 3 fields (like status) that determine which items may be edited, so whether these items may be edited or not will change from row to row.
As I've stated I've searched on the words disable, etc. and have some ideas on how to best handle this process. For one, I don't want to use disable. But, I'm new to ApEx and don't know the best route to take. Should I use the ReadOnly setting on the item and code using PL/SQL? Or, should I handle it in JavaScript and check the status, etc. there and blur the item?
I want to do this the best way, because I want all of our future apps to use the same concept. And, I want to use a concept that will run efficiently.
Thanks in advance for your response.
Tony

I have done this several different ways and have found that it has been best to utlilize pl/sql from the Read-Only using "pl/sql function body returning a boolean". From the read-only, we call a package that handles all the READ-ONLY checks (we put the call into every field by default).<br><br>
Then all we have to do is pass in the current page number and the userID and the package determines whether or not that user is credentialed to view the items on the page item by item.<br><br>
For your example, you could pass the values of the fields on the screen and get your boolean result back for read-only. The advantage to the pl/sql returning boolean is that you can impact the whole application by changing the package that does the credential checking, as opposed to creating and editing page specific javascript for all pages where you want to protect fields.

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