RE: Kombat 87 or Evo 90?
I have the 07 PA 74 tooas well as the E80 and K87. First, I don't find the 2007 E80 any smaller than the E83 in practical sailing. Might be a liter or two less, but it sails the same size wise. So, if you like the feel of the E83, I think you're gonna love the E80. This board should be your natural choice if you want your light winder to perform the best possible in smaller slower waves. There is no beating the EVO here and as you know it good in the great stuff to (only different from the Acids).
The K87 may sound freerideish, but it in fact has the same rocker and bottom as the pure acids and I definitely consider it a real wave board. It turns very similar to the PA74, but its wider so you can push it more at slower speeds. The wider tail helps planing and keeping speed on the way out too. The width (and tail width) will make the board reach its limit on a fast wave sooner or later, but then you will be on your 74 (unless you need a big volume board for light winds in good, fast waves). So, if the K87 now is such a good match for the PA74, why isn't it an ideal light wind wave baord?. Well, simply because the faster rocker of both these boards can't be turned as sharp and fit in the pocket as an (more heavily rockered) EVO and wont keep speed in a more drawn out "low powred" onshore bottom turn either.
So, while I'm very impressed with the K87 myself, I personally would never choose it over the E80 for waves (if I had the choose). There are two reasons. 1. I like the EVO feel over the Acid feel generally. EVOs just fit me. 2. I love riding waves. No matter how bad the conditions are, if I have the slightest chance of hitting a lip, I will try. In such conditions the EVO gives me the best possible odds to do so.
This is not to say the K87 is not able to "surf correctly waves 2m max" because it is. If you want to mimic the PA74 feel but in slower stuff, the K87 is probably your best bet.
I hope this rambling makes at least some sense...