Hi!
My little one is four months old. I'm an exclusive pumper through circumstance - he was premature and on a ventilator so couldn't feel directly.
I've done a lot of pumping research and lots of trial and error over the last few months!
You need a decent primary pump and a wearable if you want to wear them on the go.
For a primary pump, I'd recommend the spectra S1 or the baby buddha. For a wearable, the Eufy S1 is the best.
Flange size is everything - order a flange set and inserts from Amazon, it's essential to ensure you're maximising your output.
Momcozy are very heavily marketed but not very good. Medela pumps don't have a good reputation. I'd stay away from Elvie too.
The most important thing to remember is that those pump and pour videos you see on tiktok make you feel like you're an "undersupplied", but actually, if you're pumping instead of a feed, then around 60-90ml combined is a totally normal amount. If you're also directly breastfeeding, then don't expect more that 15-30ml if you pump after a feed.
Good luck with your little one!