Well, here's my "Get to Know Your Aircraft" for the MiG-23.
Pros: Speed, yeah that's really it*
Countermeasures
Cons: Radar- Maximum range of I think 25 miles?
Weapons- R-23s aren't very effective in either the IR or radar version, R-3/R-13s suffer from the same problems as early AIM-9s
Manueverability- Not really all that great unless you're flying between 320 to 400 knots
Low speed handling- Feels like you'll stall any moment, sensitive and sluggish
High speed handling- I found it rather uncontrolable
Range- Horrible. Not as bad as a MiG-21, but you'll notice you'll go through the fuel real quick, if you can even find the fuel gauge, and the drop tank, if you've even added it, helps very little
AG capability- It's an interceptor at heart
Countermeasures- You only get six or so, and that's only in the MiG-23MLD if I'm not mistaken.
*That speed comes in handy to get you away from a fight once you've realized all the cons.