Had to wander in an scope yer pics..Honestly, I think a light honey brown would compliment yer brown eyes, & would probably be easier to maintain. But, I like makno's answer too.
Honestly, and I have the same problem wanting to go heavy on the bleach I think a dark blonde would suit you beautifuly. I went from blonde blonde to a light honey brown with blonde hilites and a few chocolate lowlites and it is so much easier to mantain and keep healthy and I feel more comforatable in professional situations. I think medium ash blonde from natural instincts would look great on you. But then again you are the only person you have to make happy.
Stunning... ...although being a baldy slap-head myself I envy anyone that has hair...but honest, it suits you.