Agreed! @N0T_ZER0 what exactly do you want to achieve with the Elektron box? drums/rhythm, melody/harmony, sample playback/mangling, all of the above?
For drums/rhtym the Elektron RYTM and Digitakt (which really is a smaller version of the RYTM Mk2 but without the analog sound sources + a few less features) are great. The Model:Samples goes in this category as well, though Iād choose a Digitakt over the M:S any day. The RYTM can do analog drums as well whereas the DT and M:S are sample based and are good for playback and sequencing of one-shot samples. The RYTM and DT can both sample directly also (DT only in mono), whereas the M:S cannot.
For melody/harmony, the Analog 4 and Digitone are your primary choices. The Analog 4 is four subtractive mono synths in one (or one 4-voice polysynth). Some say the Analog 4 also makes better drum sounds than the RYTM, not sure how true that is but it does allow for percussive sound design at good/high quality. The Digitone is a FM synthesizer with eight voices (so polyphonic) and four tracks to sequence from. Both sound great and are a ton of fun, so here the question is more around which flavour of sound you prefer (analog subtractive synthesis vs FM synthesis).
For sample playback/mangling you can go with the Model:Samples, RYTM, Digitakt, or the big one for all things sample related, the Octatrack. The Model:Samples is new and the cheapest device. It has āone knob per functionā going for itself, in other words all functions have a dedicated knob on the user interface. All other Elektron machines have multiple functions laid out on the physical controls which are accessed by accessing pages (usually one button press away) and/ Shift + a button. The RYTM would be too overkill if youāre just after sample playback/mangling, youād pay for an analog drum synthesizer that you wouldnāt be using then. The Digitakt is awesome for sample playback, especially one-shot samples. It gives nice control over the sound design (tune/pitch, bit reduction, overdrive, LP filter or HP filter (switchable), delay, reverb, one LFO, sample start/length, forward/reverse playback etc). It also can sequence midi devices through eight integrated midi tracks, four-note polyphony per track (I believe the RYTM can do that also). On the Digitakt you can also use the two rows of trigs (1-16) as a chromatic keyboard, which is really nice for quick melodic input. Which means you can also load a waveform as sample onto one of its eight tracks (eg a sine wave), loop playback that and then use that track as a mono synth voice (and do some minor subtractive synthesis with the filter + LFO). So much to the Digitakt.
Itās worth noting that neither th M:S, DT nor RYTM can timestretch a sample (ie change its bpm without also affecting pitch).
Now, if you know you want to do samples primarily and if you know you want to sample and playback longer phrases and loops, and if you want to manipulate and mangle all these samples into oblivion, including timestretching themā¦then the Octatrack is the most awesome hardware box on the market (check out a few youtube videos on its crossfader and āscenesā :)). Itās more than that also: itās also a looper, itās an fx box, itās a mixer, it can seuqeunce midi gear (eight tracks also). Basically between those functions, it can be what you need it to beā¦which is what overwhelms people with it often.
I personally own an Analog 4, Digitakt and Octatrack - and I LOVE all three of them.
Hope this help.
Pozdrav 
h