What makes a great training session for you?
How do you know you just had a great training session? Is it because you feel ragged, tired, sweaty, bruised and a bit ruffled from getting thrown (and throwing) a lot?
Do you feel great after training because you finally managed to master a technique that you could not do before through carefull slow practice?
Do you feel inspired by something your sensei said before, during or after class?
What gets your Aikido motor running? What do you want from all of your practice sessions?
Personally a perfect class for me would be a combination of all of the above with realy physical work taking 50-60%, careful slow work taking a further 35-45% and a few inspiring and thoughtful words here and there during class making up the difference.