This is one of the most professional companies I had a pleasure to purchase an extension from. Their BT Slideshow Pro is by far the best slider I have ever used. Not to even mention that these guys support Joomla 1.5. as well and have responsive version of this module for it (which is so rare these days).
I had some minor compatibility issues with my own modules and template, but these guys have stellar support and have fixed everything to work without a glitch. They went above and beyond my expectations to deliver a truly outstanding service. Thank you Bowthemes!