fleeces usually have very good ventilation and no need for pit zips. if its so hot, you can always take it off.
Having said that, my mountain hardwear windstopper tech jacket has big pit zips. RRP $165 but currently $70 on sale at sunny sports:
http://www.sunnysports.com/prod/MHWWTJM.html?srccode=cii_65264419&cpncode=31-20219693-2a mate has a TNF Denali fleece with big pit zips. also currently on sale:
http://www.backcountry.com/the-north-face-denali-fleece-jacket-mensI seem to keep recommending you The north face and Mountain hardwear gear and seems like i'm a fan, but I'm not.
I usually dont care about brands. I just items of gear that works, I recommend. and these 2 , i would recommend. I dont usually use the pit zips tho because I dont sweat much