I'd take the Dual Rec
They are amazing amps made with the utmost care and attention to detail. The components used are top notch and the tubes are tested and matched. They practically defined a whole generation of amp building and literally helped create whole metal sub-genres. Randall Smith is a true innovator who pushes the boundaries of what an amp can do. Sure, his amps may cost a bit more but they are made like brick shit houses and you have a sense of security when buying one of his amps new or used. To that end, they are also an investment.
If you buy one of his amps today you know it will carry its value over time in the event you do move on down the road. I've seen Dual Recs in the sub $900 range used as well. I've rarely ever seen anyone complain about the quality of these amps or express disdain over an issue they were having. Mesa also has some of the best customer service in the business and they treat their customers with respect. I can't say enough good things about Mesa Engineering.
Also look at the Trem-o-verb, Road King, Mini Rec and Royal Atlantic.