As Kelli says prefer tot the compare series for exact details on each of the different AP models and their data sheets.
When I am recommending an Access Point for a customer (Be it Cisco or other vendors) the things that I first determine are:
- What is the wireless network going to be used for? For example, voice, video, high density, high bandwidth applications and the number of expected clients for each area.
- Does the customer already have a preferred AP model
- What Controller infrastructure do they already have in place, and will it support the recommended APs (even with a code upgrade. If a code upgrade is required will existing APs still be supported)
- What is the customers life cycle expectancy (no point installing APs that are close to EOL to have to upgrade them in a years time)
- What are the clients connecting to the APs (Laptops, phones, tablets etc) and are there any constraints on their compatibility with different standards (2.4Ghz only, WPA PSK only etc)
- Very important question is what is the expected budget
I then look at the different data sheets for APs that will meet the needs of the customer, and conduct a predictive / hybrid site survey for the client (very important step) and if the coverage/ capacity is the same between different models that meet the requirements, then I give them a BOM with each model along with why I would choose one over the other.