from what i hear, lucene is rediculously fast and able to do a series of complex queries in a much easier and friendlier fashion.
i guess metaphone probably won’t be able to do a full-text type of searching for product names that have “Awesome Shoes Nike XT”
if someone searhes for “nike shoes” , i don’t think metaphone will pick that up whereas Lucene should pick that up.
I haven’t looked into the “LIKE” algorithm Magento have right now but Search is something I think magento is seriously lacking in that department.
If we have like, “Sony VAIO VGN-TXN27N/B 11.1” Notebook PC”
and if i search for “sony notebook” it doesn’t return me any results.