I am in the market for a digital torque wrench that handles 3-15ish nm and ideally 3/8 to support most of my bits would would you buy? If money wasn’t in consideration what would you recommend? I was looking at the snap on ATECH2CS240 but seams really long for this nm range.
I have the Topeak D-Torq digital torque wrench and have been very happy with it. The range is 1-20Nm and it uses 3/8 bits. It’s quite slim, a reasonable length in my opinion, and the head is also small meaning it’s usually easy to access bolts even in tight positions.
Here’s the link on Amazon, but it looks like it might be cheaper elsewhere (I bought it 3-4 years ago and it’s increased in price quite a lot): Topeak D-Torq on Amazon
Edit: I just googled the Snap-On you mentioned, out of curiosity. The Topeak is a bargain in comparison 
. For comparison, the Topeak measures about 8 3/8” long and the head is about 3/4” diameter.
Another edit: Oops - the Topeak doesn’t use 3/8 bits. It uses 1/4 bits.
The Snap On is absolutely the benchmark tool in this category, but it’s arguably also overkill for the majority of users. The benefit to that price is warranty, easy servicing (parts are always available), and calibration labs know how to work on them. I’d also say look at CDI which shares similar electronics to Snap On but usually with a lesser quality ratchet head – it may be a nice balance on price and function (CDI is owned by Snap-On).
It’s a little inside industry, but most of the digital torque tools sold by cycling brands are sourced from a consistent Taiwanese specialist manufacturer. Off the top of my head, this includes options from Unior, Topeak, and Pro Bike Gear (Shimano). There are subtle differences between each, but the same fundamental tool sits beneath the skin. All of these use either a 1/4” square or 1/4” hex drive, so you’ll need to use an adapter for 3/8” compatability (not such an issue, IMO).
You then also have a number of options from other automotive tool companies. I have a digital torque wrench in this range from GearWrench that I can’t recommend. It’s even bigger than the Snap-On and the buttons aren’t as intuitive (making adjustments slow).
While I’m sure there are some great options in the middle, my experience to date has been that the more generic rebrands (like Topeak/Unior/Pro) are solid options, but if you’re chasing the best, then it’s Snap On.
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