Found the following products and methods for gene delivery - can anyone recommend one over the other and why? We've heard good things about the Helios Gun by BioRad, but we'd like to know if anyone has used Integrated DNA Technologies (IDT) products? See links below:

http://www.idtdna.com/Catalog/RNAi/IntroToRnai.aspx

http://www.bio-rad.com/B2B/vanity/pfamily/content.do?BV_SessionID=@@@@2121806598.1170968942@@@@&BV_EngineID=ccccaddkdlmmfmgcfngcfkmdhkkdflm.0&root=/Product%20Family/RNAi/Home&pcatoid=-34037&ccatoid=-34138&country=US&language=English