I'd recommend checking reviews on Newegg, Amazon, etc.
My basic laptop impression is that, for most brands, consumer models tend to have problems, but the business models tend to be pretty good. Although I am going to pass it on, I still really like my Thinkpad X61t (wonderful keyboard, good mechanical quality, still quite usable); however, I've read that the consumer Lenovos don't have the same level of quality.
Although the latest Intel integrated graphics are supposedly better, I still strongly prefer discrete graphics. Then again, YMMV; I sometimes do 3D CAD.
For most uses, 4G memory is enough, unless you start doing stuff like lots of VMs, huge pictures, huge datasets, etc. I can notice the difference between 7200 & 5400 RPM HDDs, but I doubt I'd notice the difference between i5 & i7 (my work desktop has a Xeon; if I had spec'd it out, I would've chosen a SSD + normal CPU over Xeon and no SSD).
Both seem to have generally good reviews. The Lenovo was criticized for short battery life, but I never run my current laptop on battery. I take my work Lenovo around with me and it has the large battery.
"What kind of equipment are you running on Win 3.1?"
Its used within a 3 x 6ft rack system. An ancient version of LabVIEW which runs a VXI chassis containing a number of modules such as a DMM, Waveform Generator, Digitiser, switch matrix. Also controls 6 GPSUs and a HVPSU. These are all connected via GPIB. The rest of the racks house company designed units to simulate loads and distribute power to the various units.
Everything is basically back from the early/mid 90s which doesn't seem that long ago until you realise its 20 years ago (being 30, 20 years ago seems like a long time to me)
We have 7 of these systems and we've been forced to upgrade them because the Digitiser and Waveform Generator are getting to the point where they're not supported by outside calibrators. So, it's a new PC, new OS, a more recent version of LabVIEW, new Digitiser and new Waveform Generator.
Other than that, I'm not sure how much more I'm allowed to disclose on here, sorry.
@MB... "Windows 3.1! I love it." Glad someone else does. It was so easy to maintain. Everything was in the WIN.INI file....bit cryptic maybe but nothing like the damn registry. Win 3.1 was a little flaky sometimes, but I liked it better than a lot of the later stuff.