I generally will play anyone who wants to play with me, no matter what rating. I will not refuse any challenges as long as the time limits are reasonable (e.g. 3 days per move and some time bank) and I am not playing more than 3-5 concurrent games.
I do prefer to play stronger players than me because games are more interesting/challenging.
Also I tend to analyze/annotate my completed games using chess software. So if you want one of my annotated games please ask for it.