I use Phallosan also and have had significant gains.
It’s really very comfy (as in actually feels good) and I can wear it 10-12 hours a day with no side effects, and without anyone at work noticing - so I’m generally very satisfied with it in fact.
The grip is so comfy I now have the stretch belt stretched to full tightness, and I’ve gone up a cup size (I started with the medium and am now on the large - they make an XL too which I’m looking forwards to using).
I’m uncut and have tried the exercises, pumps, autoextender - you name it really - and this is the only thing I’ve found that works so far.
I do find the ‘stretch’ condoms wear out quickly - but you can easily replace this with a regular condom. Regular condoms are very cheap if you buy them in bulk (I get 100 at a time) or get them free from your local clinic. I find they’ll support a higher tension than the original stretch condom ever could - but you should get a smaller condom than you would usually use for, ahem, other purposes, as you’ll be using them flaccid.
To use a regular condom with Phallosan (and save yourself 50 bucks in the process), just cut off the old stretch-condom just above the rim of the suction cup. Then take a regular condom and cut a very small slit in the tip (I use nail clippers for this), and pass it over the end of the suction tube. You’ll find when you apply suction that the regular condom sticks to the remains of the ‘stretch’ condom and gives a good seal.
Regular condoms do lose elasticity quite quickly, so you’ll need to replace it every couple of days or so.