I have the Maverick and I think it's a fantastic representation of a late 19th/early 20th century piano. Definitely has a different sound and feel than a contemporary grand while still being recognizable as a more-or-less modern instrument. Slightly more delicate and transparent, w/ a bit shorter decay, and a bit more tangible sense of hammers hitting strings, especially on the lower end. Having played on several acoustic instruments from this time period, I can say that this is pretty close to what the actual experience is like.
On the technical side, the playability is excellent and the tone and dynamic controls are very effective in pinpointing the exact sound (harder or softer) and dynamic response that you want. Pretty solid built-in room/reverb options as well, though I tend to play it without any reverb. If you're not familiar the w/ Kontakt player, be sure to access the customized velocity curve editor which is much better than the limited velocity presets built into the instrument interface.
In any case, I would totally recommend it if you're into pianos from this time period. In my opinion, it's more than worth it for the relatively modest price ($99), but if you can hold off for a promotional sale it can often be had for $49, or as part of a 3-instrument bundle for $99 that also includes a fantastic modern Steinway (Grandeur) and a very characterful vintage upright from around the same time period (Gentleman). For my money, this package is the best dollar-for-dollar value I know of, and I actually enjoy playing on these instruments more than some of the highly regarded stand-alones I've acquired or tried out (Ravenscroft, Garritan, Walker D, etc).