I use a CL-150 although mine was 170 shipped here is a link to one.
http://cgi.ebay.com/AquaEuroUSA-Mighty-Pro-CL-150-Aquarium-Chiller-For-Tan_W0QQitemZ200387692353QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2ea8098741
To be 100% honest it isn't a great chiller but it works. I had a little cheap pump laying around anyway so I bought it and my room temps average close to 80 degrees and the chiller keeps my rez right about 70. With your room temp I'd assume it would be able to get your rez temps down to about 65-67 which would be awesome. There is also a less expensive one, the CL-85 which may do the trick for you since your temps aren't too horrible. 420fied over at 420mag is the one with the 4" pvc aero setup that mine is based off of and he said to use a chiller so I did. He seems to have good results so I trust his judgment.
http://cgi.ebay.com/AquaEuroUSA-Mighty-Pro-CL-150-Aquarium-Chiller-For-Tan_W0QQitemZ200387692353QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2ea8098741
To be 100% honest it isn't a great chiller but it works. I had a little cheap pump laying around anyway so I bought it and my room temps average close to 80 degrees and the chiller keeps my rez right about 70. With your room temp I'd assume it would be able to get your rez temps down to about 65-67 which would be awesome. There is also a less expensive one, the CL-85 which may do the trick for you since your temps aren't too horrible. 420fied over at 420mag is the one with the 4" pvc aero setup that mine is based off of and he said to use a chiller so I did. He seems to have good results so I trust his judgment.