Guys any review on CPE modem?

Recently want to put 1 4G modem in my hometown which is not supported by fibre. So i have 2 option either 8mbps streamyx or using 4G modem.
I read some 4G basically it depend on mimo and also band it support.
I saw thread about huawei modem can lock their band in the mobile apps, so i thinking which huawei modem is recent and value for money?
Since 5G era going to come, i think perhaps i should not purchase heavy top end model like B618 and B818. Any other thought than this 2 model?