In the market for a charger for my 105 Ah semi deep cycle battery.
Short listed the following-

Optimate 6 (5 Amp) - R1500
Noco genius (7.5 Amp) - R2300
Victron Blue Smart (15 Amp, has Bluetooth, Lithium compatible) - R2500

Does the amperage matter? The higher the better?

I really like the Victron as it's lithium compatible, but is 15 Amp bit of an overkill?

What do you guys suggest?