MP, they are still making some derivations from the books, the most noticeable so far are that Jamie and Brienne are captured by Dreadfort banner men rather than the Bloody Mummers, Ser Barristan entered Daenerys' service openly instead of utilizing an alias (and not accompanied by Strong Belwas), Sam has yet to earn his nickname before things went sour at Crasters' Keep and Theon's having some odd and confusing times at Dreadfort.
The changes are still developing, so I can't hazard a guess if they will play out as good or better than the books, that said it's been a strong season so far. Adventures in contracts and negotiations in Astapor being particularly well executed.