I've been noticing a few cheap Strand 550i's for sale lately. Though I've never used a Strand before, it seems like a pretty good busking choice for the price. Coming from experience on a Hog III (only), are there any major limitations to the shape generator on the 550i (with the latest OS) that I should know about (other than the interface)? For now I'll mainly be using LED fixtures, so it won't be that important, on a daily basis I could probably get by with the standard step effects, but there could well be some scanners in our future.