But I much prefer use mycelium for faster confirmations tho, and electrum for multiple sending.
Faster confirmations? I don't understand how the wallet has anything to do with confirmation time... The confirmation time is based on fee rate and the current network conditions. If you send identical transactions from WalletA and WalletB at the same time, both with fee of X sats/byte, they should theoretically confirm at the same time.
The network has no idea what wallet they've come from, so saying "WalletA gives faster confirmations than WalletB" is nonsensical.
Please read the later post why I said 'Faster confirmation' using mycelium wallet. We're talking about transaction fee amount here and all you said is right but I'm more convinced that having large fee has the large chance to confirmed first.
Since mycelium fee is much higher than electrum, having such 130 sat/byte as lowest fee IIRC (before the recent update) than electrum having 90sat/byte as the lowest fee or even lower base on number as mentioned of tryninja since I never used that number of fee with electrum...