For many years I didn't need baselayers. Youth, hair and a suitable metabolic rate ensured my warmth in all conditions. I well remember frosty days of winter fishing with my dad, I'd sit there all day long with just a light covering of clothes while he was wrapped up like an Eskimo and still he shivered.
The years crept on and eventually I relented and invested in some synthetic blue wonder-fabric LJs and top from SubZero. Indestructible they are, and mightily effective. If middle-age hadn't made me too big for them, I'd probably still be using them. They've been passed on to the next generation and are still doing well 25 years after purchasing them.
Those blue Meraklon things were replaced by some more-modern polyester Spiderman sets made by Five Seasons. They were ultra-cheap, I figured that they'd not be much cop and wouldn't stay the course, but they still work fine. The problem with them is, well, aromatic. Two days on the hill and they reek. I needed something more walking-partner-friendly.
Reading through a few relevant websites/forums/blogs confirmed what I already knew - that Merino's where it's all at. I decided to go there, I just needed some directions.
But how much to spend? And what to get? Hood? Thumb-loops? One-piece? More research was required. Opinions would be sought. Specifications would be pored-over and pics would be scrutinised.
Joe Newton's review of the Ibex Hooded Indie was interesting. At $170 for a set it would have been a stretch.
Hendrik Morkel's review of the Woolpower long-john and crew-neck set was equally interesting. Just over £110 for a set of these (or save six quid make do without a fly).
The I/O Bio Merino Contact Pilot Suit was recommended by a friend, but he ended up with a slap around the head 
No, I wasn't about to splash large amounts of cash on such sartorial elegance.
Aldi saved the day. LJs £15.99 a pop. Same price for a short-sleeved top. No hood, no fly, no thumb-loops. Any colour you like so long as it's black. I bought a set for me and a set for Chris.
They're basic but they're good for the money. The top stays tucked in and the LJs don't migrate anklewards. The top's neck is a tad more open than I'm used to but it's bearable, I'm getting used to it. The seams are fine, there are no scratchy labels, the fabric doesn't make me itch.
But do they pass the pong test?
Well, in the interests of pseudo-science I've been power-wearing them. Since buying them on December 1st, I've worn them every day dawn-to-midnight and also ten times overnight. While hostelling and winter-walking last weekend they were worn 24/7 except for when I was in the shower. They performed perfectly on the hill, I teamed the top with my Rab VR Climb jacket and the LJs with my Quechua Bionnassay trousers and all was fine. Perspiration was handled well during exertion, warmth was retained during stops.
My hi-tech testing-equipment consisted of my two daughters' noses... yesterday the as-yet unwashed armpits of the top were duly sniffed and it was declared that said garment "smells fine, just like a warm tee-shirt".
That's good enough for me.
Now, how much longer can I keep wearing these things before they are introduced to the washing machine?
