...I am not sure how either one of those work in terms of fees, and do you have the freedom to select how much you want to spend on transaction fees or not.
In Coinomi, fees are customizable.
@op
I ain't sure for which alts you are looking wallet for and whether you have iOS/android. But still, if it's for ethereum I'd recommend alpha wallet
[1] available on on iOS/android and open source
[2].
[1] https://alphawallet.com/[2] https://github.com/AlphaWallet