As the title says.. thoughts on the best 640 resolution thermal for the money. I've went through some of the old posts and the Iray seems to get very positive reviews. I've seen some Pulsar XG-50 units for under $3000.00. I like my Thermion 2 384 unit. It's been great but I may move up to a 640 unit within the next few months. Thanks and Happy New Year to all.