I have used many computers/handhelds over the past fifteen years. The REVO in my opinion is the best I have encountered. The built in software is exactly what "we" need for collecting information in agricultural research plots. The transfer of files between machines (infrared) is awesome! Light weight , easy to hold , lots of memory and rechargeable long lasting batteries are all positives for this little machine. The only drawback is the screen darkens in direct sunlight. However it takes just a second to adjust. Great machine. Great price. Lack of availability right now is a big concern as there are no other handhelds being made to touch it.