I am getting a remap next month. I considered Bluefin - for some of the reasons mentioned above. However I discounted it as I felt that convenience was not really that important to me.
I've never had a remap and my car has 100k miles (58 plate A3 2.0TFSI). I wanted someone to check the car for any obvious matters prior to applying a map. I fancied understanding what my BHP was before and after. I want to try and avoid any obvious issues afterwards. (e.g. clutch slipping, too much power being given in lower gears not where I necessarily want it all, etc). A generic map isn't necessarily for me.
I also read on here of at least a couple of reputable tuners with good feedback which are cheaper than Bluefin and offer the above. No brainer really, for me therefore, to avoid the bluefin route.
If you search for bluefin, you should find good information. Also search for remap, rtech, unicorn, shark and even tuning, REVO etc. That plus you knowing exactly what it is that matters to you from the tuning 'experience', plus no doubt some more views here, will help you make your mind up!