Replying to Summer Abroad

So this summer I'm hoping to do some sort of travel program to New Zealand, and I've found a few programs that seemed good but I was wondering if anyone has heard of them or has had any experience with them. The two that I'm looking at are Global Works Travel and then The Experiment in International Living. The second one has really caught my eye because it incorporates a homestay, but any info or input on either would be much appreciated! thanks newschizzlerss