I wasn't the biggest fan of Genelec monitors due to their boring shape (my opinion, of course). Still not a fan, but they sound amazing!!! The speakers are very detailed and fun to produce on. You can really hear what is going on. The GLM kit is a must and really compensates for a poorly treated room. After the swipes, the calibration process, shows you your room frequencies, so I'm thinking you can use it for treating your room more efficiently in the future. After the calibration, there is a hot switch in GLM software, where u can hear the difference between calibrated and factory setup. I'm looking forward to a Genelec sub (7360 or 7370). Genelec recommends the 7370, but I think that 7360 is more than enough for a 20-25 square meters room. The only difference is the SPL. If u are the low volume working type, there is no need for a sub.
I would exchange these Genelecs only for a pair of ATC SCM25 or Barefoot MM27.