Is there any recommendations regarding whether or not to use the Hapy parser generator? ( http://hapy.sourceforge.net/ )
Although i really like Spirit Qi, Compile time kills both me & Intellisense !
Of course I can hack a parser by hand or using Bison, however I'm looking for some other, more comfortable alternatives.

Any suggestions?

I have no experience with the Hapy generator (in fact I didn't even knew it existed) so I can't comment about it, but another similar alternative that works well is pegtl: http://code.google.com/p/pegtl/

However, it doesn't use expression templates but simply nested templates so grammars don't like as clean as spirit. But on the other hand it's much lighter than spirit (although compile times are still rather long)