If you used the online version, you kinda used Lacerte since they are similar products in regards to data entry.  The biggest problem going from ProSeries to Lacerte is the learning curve since ProSeries is form based for data entry.  But if you used the online version you already have a taste for that.  Lacerte handles more complex situations than ProSeries, but the pricing is also indicative of the increased horsepower.  It's kinda like someone owning a Chevy Spark looking at upgrading to a Chevy Corvette ------------- the sticker prices indicate there is a difference of what is under the hood.

But then again, I'm a ProSeries user and not planning on taking the jump from ProSeries to Lacerte anytime soon.  If you are happy with ProSeries but have a few returns that are a little more complex, you should consider using Lacerte on a pay per return basis on those more complicated returns.