I have shot ther etek 4 for a good month of training, tournie and a scenario. whereas i have only shot the mini for s ew points and a walkon game.
Personally i prefered the etek as it did feel much more like a top end marker, as i have owned way too many ego's i really did find it very very similar.
Where as the mini didn't feel right to me due to the size' this thing is seriously small!! And for comparison i'm not a very big guy, 5'10 and 10 stone so i ain't that big. However i did shoot one which was very well taken care of and had a few internal upgrades (can't remember what) and it did soot well, however i prefer the shot of other guns and as i keep going back to, the feel.
Personally if you are a medium hight guy, or one who likes a normal sized marker a good idea may be to broaden your search andf comparison to incorporate used markers (when classifieds are open to you) as you willget top end performance at mid to low end prices. If you are looking at this i would advise:
-EGO 10- efficency and easy to maintain- expect to pay around £320 atm
-dm12-smooth shooting, reasonably efficent- £380
-older dm's- all are smooth- ask for prices if unsure
-macdev clone gt- personally my gun of choice atm smoothest shooting, sexy, no macro, harder to maintain however- £550
-macdev clone/clone vx- smooth and almost identical internals to gt but cheaper and macro- £300
-Geo 2- unefficent, feels nice, shoots nicely- £350
-empire axe- efficent, shoots well- £320
!!!steer clear of vanguard creeds and demons!!!!!!!! very unreliable, feel poorly made and have no uk support (company went bust in uk)!!!
or if you like solely new guns look at:
Axe as above
proto reflex rail
etek 4
etha
but before buying a mini definitely try one to see if you like the sizing