It's highly configurable, under constant development by Vince and the crew (hard keeping up with new features and improvements sometimes!), and support is second to none.
Having said that, to utilise the enormous range of possibilities available when using Jomres, the learning curve can at first glance be a tad alarming (ther is a lot to take in). Upgrades come thick and fast and if using customised templates, a certain amount of head scratching is a distinct possibility!
My advice is not to panic when something gets out of kilter, because the forum is a lively goldmine of tips, tricks and get-arounds with ontributors such as Vince himself (always appears to be logged in) and Piranha coming up with solutions 99% of the time.
So, if you want a cutting-edge solution for rentals, lets, property sales listings, or virtually any other kind of booking/appointment engine functionality - Jomres is the one to go for.
Thanks D. for taking the time to review.
v6 is rock solid, so we're hoping now to make this a long term release to allow us to focus on other stuff for the project like http://www.myholidayfinder.com which will give us all a much needed rest!