Sooo, I went through this exact same thing last year when I ditched my DSLR for the R-system. Honestly, the budget struggle is real lol. I spent forever comparing the Lexar Professional 1667x 128GB SDXC UHS-II V60 ($40-50) against the V90s. I ended up getting two V60s and they've been solid for 4K video and high-speed bursts, though I noticed the buffer takes an extra second to clear compared to my buddy's ProGrade Digital SDXC UHS-II Video Speed Class 90 (V90) 128GB. With batteries, I tried some cheap Wasabi Power Battery (2-Pack) and Dual USB Charger for Canon LP-E6NH ($35ish). They work fine for a backup, but i noticed my R6 II only hits that max mechanical frame rate when using the official Canon LP-E6NH Rechargeable Lithium-Ion Battery ($79). If the battery isnt OEM or high capacity, you sometimes lose that "green icon" for max speed. Basically, I found that spending $160 on two genuine batteries and $100 on V60 cards kept me right under that $300 mark... kinda the sweet spot imo.

> Regarding what #6 said about "Can confirm" - tbh i am in the exact same situation and its driving me crazy. ive been a canon shooter for over a decade but this whole mirrorless accessory ecosystem is a different beast entirely... been staring at my screen for like three weeks trying to decide if i should grab the SanDisk Extreme PRO 128GB SDXC UHS-II or if i really need the way more expensive v90 version just to keep the buffer happy. it is seriously frustrating because i want to get out and shoot but im paralyzed by the fear of buying the wrong stuff. still havent found a straight answer on whether the third party power options like the SmallRig LP-E6NH USB-C Rechargeable Camera Battery actually hold up long-term or if theyll just mess with my burst speeds like people say. it sucks being stuck in gear limbo when you just want to use your new camera.

For your situation, mirrorless data is huge, making buffer lag a REAL pain. I think V60 cards are basically enough and your gonna save money. Plus, I LOVE sticking with OEM batteries for reliability!!

@Reply #3 - good point! Tbh I’m gonna have to disagree slightly with the earlier suggestion about third-party batteries. The R6 Mark II is incredibly picky about its power source. If you dont use the Canon LP-E6NH Lithium-Ion Battery, the camera often throttles the mechanical shutter speed and you lose that high-speed H+ burst mode icon. I’ve been very satisfied sticking to OEM because it ensures the processor is getting the full voltage it needs... it’s just more reliable for professional work. On the card side, while V60 is fine for basic stuff, I’ve found that the SanDisk 128GB Extreme PRO SDXC UHS-II V90 works well when things get intense. If you’re shooting 4K 60fps or high-speed raw bursts, that extra write speed is noticeably better for clearing the buffer quickly. No complaints here after months of heavy use. If you’re worried about the budget, maybe just grab one V90 for your primary slot and a cheaper V60 for the backup. It keeps things stable.

Facts.

@Reply #4 - good point! Joshua is totally right about the power draw on these newer bodies. Im usually pretty cautious about my gear too since I dont want to risk anything with a cheap knockoff battery. Before you buy anything tho, I have a quick question:

• What kind of stuff are you mainly shooting? Like, are you doing fast sports where you need that high-speed burst or just casual family photos? Honestly, I would just hop on YouTube and search for R6 Mark II accessory guides or maybe check the Canon subreddit. There are tons of people who have done brand comparisons between the different card speeds and battery types. I saw a really good video about this a few weeks ago that went through every single card brand and battery voltage, it was super detailed and basically answered everything. Just searching for R6II battery tests should bring it up as one of the top results.

Can confirm