MikroElektronika's web site is promoting v5.6 of their AVR BASIC and other compilers.
http://www.mikroe.com/eng/news/v...
http://www.mikroe.com/
I'm taking a look. In the past, the AVR support was quite buggy. Perhaps this time it's good?
(prices are lower from distributors, e.g., even Mouser. But do a try before buy. I have no affiliation with the company.)