Take out klipsch s4. Better than cx300 and creative ep830's but that's about it.
Put in phonak pfe 112 and use it with the grey filters provided.
These are very often on sale for around £60/70. If it's cheaper this might be an idea; get the version of this earphone that only comes with green filters (verson is called pfe 012) and buy separately a pack of grey ones.
In my opinion, sonically, these phonaks easily beat the grado gr8 and the gr10 and a whole host of other iems (including senn ie8). They are unbelievably underrated. The BEST i've come across in terms of comfort, these phonaks ended my continual searching for universal iem's. They killed this 'upgradititus' bug and the next iem i'll get would be a custom one (even though ACS custom iem manufacturer failed me, there's a bit in me that still wants a custom)