I've listened to the Adams when I was shopping for a pair of monitors.
Next only to the Yamaha NS10, they're the harshest sounding ones I've heard, especially in the upper mids which are so crucial for soloing.
I personally ended up buying a pair of KRK RP6 after listening to everything they had in store. On the shootout there were Adam, KRKs, Mackie (very nasty sounding mids on those), M-audio, Behringer, Alesis, Genelec in 8", 6" and 5" configurations. To my ears, the KRK have the sweetest sounding mids of the bunch without being too coloured. I loved the RP8, but didn't have the space, so went for the second best, RP6. FRFR geeks will probably tell me they're not flat, which is fine by me - I've found the guitar tones I dial on them to translate pretty well, and so do my mixes. The Genelec come a close second, but have a slightly hyped upper mid range that makes guitars too piercing for me.
Want my piece of advice? Return the Adams, give the KRKs a try. Worked for me, YMMV.