How to pair speaker watts with solid state amp watts

In advance, thanks for the help.  I have been saving my pennies for years and finally have an opportunity to grab either a McIntosh MA5200 or MA6900 for basically the same price.  I am a HUGE JBL fan, and although I don't have them yet (I'll have to save those pennies for a few more years : ) I am planning on either getting a pair of L100's or 4312G's (probably the later due to price diff).  Both are rated at 200watts max.  I am tempted by the MA5200, I like the size, I have a small space, I like that it is much newer, and the updated connections.  However, the MA6900 is rated at 200Watts where as the MA5200 is 100.  I have no way of comparing and the gear is used so no returns, what will I notice? Is the 100watt amp enough for the JBL's?  I would really appreciate some guidance here! Thanks!

(in anticipation of the question: I listen to classical, african/malian trance, classic rock, live acoustic stuff, occasionally industrial music, hip hop periodically, and jam band. typically at low volumes with the occasional solo night where i crank it up)