https://www.bogleheads.org/wiki/Backdoor_Roth

Basically allows you to contribute to a Roth even if you have exceed the limits.

If you want to do backdoor Roth then you will not want to own any traditional IRAs. In that case you would be better off moving to your current employer's plan, assuming it's got reasonable options and fees. If the backdoor Roth doesn't appeal or your current employer 401k is meh/bad, then I'd roll it to an IRA at Fidelity and call it a day!