OC3 Multiplexers

Hello, happy weekend to you; I've been browsing around for a mux to break an OC3 down into DS3's. ADC et al only have DS3-DS1 muxen, from what I can tell on their site (Although the widebank 28 has worked great for me). It looks like my only option is to go with something like a Fujitsu FLM150 which is a good box, but I wanted to see if there's anything cooler, cheaper, faster out there. Thanks, Christopher