Unless you have tons of HDMI connections, go with regular component cables. You can use regular RCA cables and they'll do the same job.
I would also highly recommend going with a system selector like this:
http://www.amazon.com/gp/product/B000FIS7J8/sr/ref=pd_cp_vg_0/102-3925350-9495326?ie=UTF8&qid=1099665268&sr=8-1&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-41&pf_rd_r=1Q1EDKJ7JH7696NBYS1V&pf_rd_t=201&pf_rd_p=250313801&pf_rd_i=B0001GAYUE
I have the older model and it works well. There are ones with HDMI inputs, but they cost. I have my HD DVR hooked up via HDMI to DVI and it looks just the same as the cables. Seriously ...