I live in Mexico so cannot recommend juicer brands, but I would suggest you look for quality construction. The machine I have is Mexican made, heavy metal construction with only a few plastic parts, and juices everything in sight (including coconuts!). I would stay away from lightweight, plastic construction.
You definitely want something with citrus attachments!
Whatever machine you wind up with, please do share your juicing experiences with us. Several of us here have just finished a ten day cleanse, some are continuing, and I have done a series of ten day fasts with cleansing diet between for colon cleansing purposes (VERY productive!). We are here to help you meet your goals.