Well, I got a PM from someone asking about the quality of instruction and whether or not the fast pace would negatively impact your ability to train effectively. I wrote back saying that the instructors are top notch, but they do push you to meet the checkride schedule (presumably to meet the 90 days), but that they are always willing to slow down for a minute if there's a manuver your having difficulty with (Like the Vmc demo- quite a handfull the first time you try it). It goes without saying that if you're not ready for a checkride, then sing out. No point in wasting $300 on an examiner if you are reasonably sure you're not going to pass. The accelerated pace is a bonus as far as I can see. If I'm going to get 140 hours of time in a Seminole, then I'd rather get it flying all day 7 days a week rather than over several months. The manuvers and procedures are going to be more ingrained into muscle memory the more intense the training is (think fighter pilot training).
As with any business or organization, there are the netgatives. The schedules are somewhat vague, and theres a lot of 'hurry up and wait' due to weather, checkrides overriding other training flights, waiting on planes to get back from other locations... the usual troubles. Also, you should be aware that the 50 of the 190 multi hours are in a simulator-- so you're really only getting 140 hours of true multi-engine time. This really isn't such a big deal- at the Dallas location, they have the AST300 FTD with the Garmin 430 GPS-- pretty cool. Moreover, almost all of the sim time is in prep for the instrument checkride. The benefit there is that instead of having to go missed for every practice approach and wasting time flying back around to set up again the instructor can push a button and have you on a 30 degree intercept to the inbound course in a heartbeat.
The piece de la resistance though is the Seminole. I came from a 150hp C-172 with a dodgy ADF and leaky air vents, now I've got 180HP on each wing and a stack of dual Garmin 430's. Feels like a rocket ship the first time you pull it off the ground, and when it comes unstuck- man, does it want to climb. Can't wait for the Citation ride
If any one else has any questions, please ask.