XA - great camera, lasted two years with me. Minox 35, amazing lens, they crapped out much sooner. Both are good source for 35mm VF, Minox lens is recyclable in M mount.
Rollei 35 was awesome small brick apparatus. Paper soft top plate, plastic gears inside and crude film advance. Sold both MiG and MiS in working order.
AGFA Sensor RF and Olympus Trip 35 are small, good lens, but it is very boring to photograph with them. My creativity was just in mute mode. Sold in working order due to lack of use.
I realised what I'm not trashy person tossing camera into the pockets. I never did, except waterproofed 5$ film P&S on kayak with me. Usually I always have bag with me.
Wallet, mobile phone, charger, business and personal cards, leatherman tool, flashlight, keys - I need bag for this.
And so I like not bulky, but not too tiny and weak due to this cameras.
I have tried some small old fashion SLRs as well and never get attached to them. I'm just using Rebel 300, if I want SLR. It is small camera. And where are small, new primes available for it under 100$ price.
Zorki with collapsible lens, or tiny 35 2.8. M4-2 with small 35 2.5 or even R2M with 28 1.9 is not bulky. I use them most. Even 50 1.5 Jupter-3 is very small lens.
And I have Smena-8M and it is amazing small camera. It allows to use it in S16 mode or to be fully creative, sorry, in M mode.
