I would respectfully disagree. I spoke with a few reputable shop guys (who you are familiar with) and they said that Unichips are possibly dangerous. They give you extra power by leaning out the mixture. Some, in moderation, would be helpful, but you don't wanna do this with a fixed map (not tuned for your situation) unless you have an EGT to know what it is doing. Also, the big problem with the Unichip, from what I have been told (not direct experience) is that the mid throttle fuel levels are too lean. That is where you will get your high EGT's and in a few cases, blown bits.
If you guys want a safe system, buy an Apex'i S-AFC ($300) and EGT ($210 for Greddy Peak/Hold/Warning 60mm). You can then constantly retune it for changing mods and climate conditions. If you want to run something that leans the system out to run borderline-too-lean, you need to be able to monitor and adjust it instantly.
Here is my opinion on fuel management:
Unichip: Dangerous with fixed maps and no way to monitor the EGT's and O2 sensors. If your setup isn't common/popular, it is a PITA to get a map for your mods.
Unichip+MBC:Tempting and can be dangerous. 1.0 psi more than you should and you have costly repairs on your hands.
Unichip+EGT/AirFuel:A bandaid and more limited than some options, but if you plan to do a certain set of mods, it is cheaper than EMS+gauges, but not as cost effective as the Apex'i+gauges solution. OTOH, if you don't know how to tune much, this is probably easier to deal with.
Apex+EGT/AirFuel: Much safer and can be adjusted while driving the car. If you are playing with your car enough to need fuel maps (paying someone to do it for you) you should learn enough about your car to be able to do the tuning yourself.
EMS+EGT: You can constantly adjust/monitor the system and tune as close to the edge (or far away) as you want. Safe as many maps as your PC will hold. Gives you a ton more options to improve power/driveability/etc.
Note that an EGT is on all of them...