The GMS 120 has gobs of power. Don't know about reliability (no experience) but it is a heavy sucker. At 31 ounces, it is 4 ounces heavier than the G-90 and 12 ounces heavier than a Saito 100. That 31 ounces will need some tail weight to balance so I suspect that the Edge would be a lead sled! The G-90 should be more than adequate in terms of power but you might consider a lighter solution. Just my opinion.