best oil for test?

[canadian]

im looking to buy test E and the source i have has like a bunch of different oil types is there any real difference? ill list them off if any1 wants to recommend which are good and which are bad

grape seed
cotton seed
ethyl oleate

 

[fattofat]

Grape for comfort since its thin and tends to rarely cause inflammation

Ethyl if you want to use 27g+ needles but some people do have some time of irritation from it more often than grape

Cotton if you prefer stable levels if youre injecting weekly and such