I love a Buzz (snagged a like new black one for £40 off Vinted a while back). Great value and last forever - I’m still wearing some from well over 20 years ago - a little battered and frayed at the cuff, but the shape is still how it should be.
Can also wholeheartedly recommend Real McCoy’s, Warehouse & Co, and Allevol, especially if you want a raglan sleeve, but I wasn’t sure what the budget is.
For a more budget-friendly option i popped into R-Store in Manchester a few months back and picked up a Power Goods sweat which I think at £70 are great value
I’d also recommend using Tenso as a proxy, I’ve been buying bulk bits from 2nd Street, keeping a few for myself and selling the rest on Vinted. Someone on here mentioned the Vinted seller Windsor Couture which got me thinking where they get their stock from which led me to 2nd street. I’ve picked up some extremely nice bits for great prices.
I’d say not, I bought an item from Windsor Couture and it arrived pretty quickly. I’ve got a large order incoming from Japan and it takes several weeks to arrive due to being sent to the forwarding warehouse, then being repacked and posted to the UK.