GUI Development Tools for Informix

My company is currently reviewing the available GUI development tools for our Informix On-Line (v 5.0) database on our Sun SparCenter 2000. Since we have just recently thrown out another vendor's product (it was a character based development package, interpreted and containing only a limited subset of 4GL), I don't want to limit my company's review of the available GUI toolkits. However, we have to make a decision by Tuesday in order to begin development for our June 1 implementation deadline. Has anyone else reviewed these tools? My current preference is SQL Windows from Gupta. Btw, if this isn't the proper forum, please direct me (I haven't been able to find a more suitable discussion group off of my Internet service provider :( ). I can't wait to get our own feed running. Albert E. Whale