skytrak over optishot, if you are looking for some closer to 'real world' simulation. Neither are a full on, or close to say a Foresight/QCquad launch monitor @ over $14k, but the Skytrak is pretty decent at a fraction of the cost. I'd say the Skytrak is the best bang for the buck, it's to the point of when you know a shot is gonna go a little right/left/long/short or hit on the screws, surprisingly accurate, plus lots of courses etc. Buddy has one at the shop, not sure on what course packages etc he has on it. Check some reviews online, for the little incremental price you'll be hard to beat the Skytrak at the moment. I'm looking at going with a Garmin G80 launch monitor/gps, would be interesing to compare the shot data to either system. https://buy.garmin.com/en-CA/CA/p/597253 Either way you go it gets you swinging thru the winter and can have some laughs with some golf buddies!
I have been looking pretty hard at this as well. I played more this year than I have in a long time and am finally getting back to where I know I can play from my days playing junior tournaments. Would like to continue through the winter to just keep consistent.