My advice would be to avoid the Osiris stuff and get yourself a copy of LUTCalc and build your own LUTs. Do you really want your work to look like every other chump who has applied pre baked looks?
Also you can use Sony's free Catalyst Browse software to generate LUTs based on their Looks. I use their 709A look modified with various exposure pushes (+1 for standard shooting, +2.5 for day ext, etc.). But yeah I've had the most luck with Impulz and there are a couple nice looks built into Premiere's Lumetri...